{"id":7879,"date":"2023-02-23T03:58:53","date_gmt":"2023-02-23T00:28:53","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/loading-images-with-reactjavascript-3996\/"},"modified":"2023-02-23T03:58:53","modified_gmt":"2023-02-23T00:28:53","slug":"loading-images-with-reactjavascript-3996","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/loading-images-with-reactjavascript-3996\/","title":{"rendered":"\u0628\u0627\u0631\u06af\u06cc\u0631\u06cc \u062a\u0635\u0627\u0648\u06cc\u0631 \u0628\u0627 React\/JavaScript &#8211; \u0627\u0646\u062c\u0645\u0646 DEV \ud83d\udc69\u200d\ud83d\udcbb\ud83d\udc68\u200d\ud83d\udcbb"},"content":{"rendered":"<div data-article-id=\"1375611\" id=\"article-body\">\n[NOTE: The live web app that encompasses this functionality can be found here: https:\/\/www.paintmap.studio.  All of the underlying code for that site can be found here: https:\/\/github.com\/bytebodger\/color-map.]\n<p>\u062f\u0631 \u0627\u0648\u0644\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0627\u0632 \u0627\u06cc\u0646 \u0645\u062c\u0645\u0648\u0639\u0647\u060c \u0645\u0646 \u062f\u0631 \u0645\u0648\u0631\u062f \u0686\u0627\u0644\u0634 \u0647\u0627\u06cc \u0645\u0631\u0628\u0648\u0637 \u0628\u0647 \u06af\u0631\u0641\u062a\u0646 \u06a9\u062f\u0647\u0627\u06cc \u0631\u0646\u06af \u062f\u06cc\u062c\u06cc\u062a\u0627\u0644 \u0627\u0632 \u0627\u0634\u06cc\u0627\u0621 \u062f\u0646\u06cc\u0627\u06cc \u0648\u0627\u0642\u0639\u06cc \u0635\u062d\u0628\u062a \u06a9\u0631\u062f\u0645.  (\u06cc\u0627 \u0647\u0645\u0627\u0646\u0637\u0648\u0631 \u06a9\u0647 \u0628\u0647 \u0627\u06cc\u0646 \u0622\u0645\u0648\u0632\u0634 \u0645\u0631\u0628\u0648\u0637 \u0645\u06cc \u0634\u0648\u062f\u060c \u0646\u0645\u0648\u0646\u0647 \u0647\u0627\u06cc \u062f\u0646\u06cc\u0627\u06cc \u0648\u0627\u0642\u0639\u06cc <em>\u0627\u0632 \u0631\u0646\u06af<\/em>.) \u0627\u0645\u0627 \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u0645\u0646 \u06cc\u06a9 \u0646\u0645\u0627\u06cc\u0634 \u062f\u06cc\u062c\u06cc\u062a\u0627\u0644 \u0645\u0639\u0642\u0648\u0644 \u0627\u0632 \u0647\u0631 \u0631\u0646\u06af \u0645\u0648\u062c\u0648\u062f\u06cc \u062e\u0648\u062f \u062f\u0627\u0634\u062a\u0645\u060c \u0645\u062c\u0628\u0648\u0631 \u0634\u062f\u0645 \u062f\u0631 \u0648\u0627\u0642\u0639 \u062a\u0635\u0627\u0648\u06cc\u0631\u06cc \u0631\u0627 \u06a9\u0647 \u0645\u06cc\u200c\u062e\u0648\u0627\u0633\u062a\u0645 \u062f\u0633\u062a\u06a9\u0627\u0631\u06cc \u06a9\u0646\u0645\u060c \u0628\u06af\u06cc\u0631\u0645.<\/p>\n<p><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter-rtl ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\u062a\u063a\u06cc\u06cc\u0631 \u0648\u0636\u0639\u06cc\u062a \u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/nabfollower.com\/blog\/loading-images-with-reactjavascript-3996\/#%D8%AF%D8%B1_%D8%AD%D8%A7%D9%84_%D8%A8%D8%A7%D8%B1%DA%AF%D8%B0%D8%A7%D8%B1%DB%8C_%D8%AA%D8%B5%D9%88%DB%8C%D8%B1\" >\u062f\u0631 \u062d\u0627\u0644 \u0628\u0627\u0631\u06af\u0630\u0627\u0631\u06cc \u062a\u0635\u0648\u06cc\u0631<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/nabfollower.com\/blog\/loading-images-with-reactjavascript-3996\/#%D8%AF%D8%B1_%D9%82%D8%B3%D8%B7_%D8%A8%D8%B9%D8%AF%DB%8C%E2%80%A6\" >\u062f\u0631 \u0642\u0633\u0637 \u0628\u0639\u062f\u06cc&#8230;<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%D8%AF%D8%B1_%D8%AD%D8%A7%D9%84_%D8%A8%D8%A7%D8%B1%DA%AF%D8%B0%D8%A7%D8%B1%DB%8C_%D8%AA%D8%B5%D9%88%DB%8C%D8%B1\"><\/span>\n<p>  \u062f\u0631 \u062d\u0627\u0644 \u0628\u0627\u0631\u06af\u0630\u0627\u0631\u06cc \u062a\u0635\u0648\u06cc\u0631<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0645\u0646 \u0628\u062d\u062b \u06a9\u0631\u062f\u0645 \u06a9\u0647 \u0622\u06cc\u0627 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0631\u0627 \u0628\u0646\u0648\u06cc\u0633\u0645 \u0632\u06cc\u0631\u0627 \u0622\u067e\u0644\u0648\u062f \u0641\u0627\u06cc\u0644 \u0647\u0627 \u06cc\u06a9 \u06a9\u0627\u0631 \u0628\u0633\u06cc\u0627\u0631 \u0627\u0633\u0627\u0633\u06cc \u062f\u0631 \u062c\u0639\u0628\u0647 \u0627\u0628\u0632\u0627\u0631 \u06cc\u06a9 \u062a\u0648\u0633\u0639\u0647 \u062f\u0647\u0646\u062f\u0647 \u0627\u0633\u062a.  \u0627\u0645\u0627 \u0628\u06cc\u0634\u062a\u0631 \u0622\u0645\u0648\u0632\u0634 \u0647\u0627\u06cc\u06cc \u06a9\u0647 \u062f\u0631 \u0645\u0648\u0631\u062f \u067e\u0631\u062f\u0627\u0632\u0634 \u0641\u0627\u06cc\u0644 \u0647\u0627 \u0645\u06cc \u0628\u06cc\u0646\u06cc\u062f\u060c \u0641\u0631\u0636 \u0645\u06cc \u06a9\u0646\u0646\u062f \u06a9\u0647 \u0634\u0645\u0627 \u0648\u0627\u0642\u0639\u0627\u064b \u0627\u06cc\u0646\u0637\u0648\u0631 \u0647\u0633\u062a\u06cc\u062f <em>\u062f\u0631 \u062d\u0627\u0644 \u0622\u067e\u0644\u0648\u062f<\/em> \u062a\u0635\u0648\u06cc\u0631 &#8211; \u0628\u0647 \u0628\u0631\u062e\u06cc \u0627\u0632 \u0633\u0631\u0648\u0631\u0647\u0627.<\/p>\n<p>\u0627\u0645\u0627 \u062f\u0631 \u0627\u06cc\u0646 \u0645\u0648\u0631\u062f\u060c \u0645\u0627 \u062f\u0631 \u062d\u0627\u0644 \u0633\u0627\u062e\u062a \u06cc\u06a9 \u0628\u0631\u0646\u0627\u0645\u0647 React \u0647\u0633\u062a\u06cc\u0645 \u0648 \u0646\u06cc\u0627\u0632 \u062e\u0627\u0635\u06cc \u0628\u0647 \u0630\u062e\u06cc\u0631\u0647 \u062a\u0635\u0627\u0648\u06cc\u0631 \u062f\u0631 \u0633\u0631\u0648\u0631 \u0646\u062f\u0627\u0631\u06cc\u0645.  \u0645\u0627 \u0641\u0642\u0637 \u0628\u0627\u06cc\u062f \u0622\u0646\u0647\u0627 \u0631\u0627 \u0628\u06af\u06cc\u0631\u06cc\u0645 \u062a\u0627 \u0628\u062a\u0648\u0627\u0646 \u0622\u0646\u0647\u0627 \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u0628\u0631\u0646\u0627\u0645\u0647 \u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u06a9\u0631\u062f.  \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0645\u0646 \u0645\u06cc \u062e\u0648\u0627\u0647\u0645 \u0646\u0634\u0627\u0646 \u062f\u0647\u0645 \u06a9\u0647 \u0686\u06af\u0648\u0646\u0647 \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0631\u0627 \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0627\u0646\u062c\u0627\u0645 \u0645\u06cc \u062f\u0647\u0645.<\/p>\n<p>\u0627\u06cc\u0646 \u06cc\u06a9 \u0646\u0633\u062e\u0647 \u06a9\u0627\u0645\u0644\u0627\u064b \u062d\u0630\u0641 \u0634\u062f\u0647 \u0627\u0632 \u0645\u0624\u0644\u0641\u0647 UI \u0627\u0633\u062a \u06a9\u0647 \u0645\u0646 \u062f\u0631 Paint Map Studio \u0627\u0632 \u0622\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u0645:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"cm\">\/* UI.js *\/<\/span>\n\n<span class=\"k\">export<\/span> <span class=\"kd\">const<\/span> <span class=\"nx\">UIState<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">createContext<\/span><span class=\"p\">({});<\/span>\n\n<span class=\"k\">export<\/span> <span class=\"kd\">const<\/span> <span class=\"nx\">UI<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">props<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n   <span class=\"kd\">const<\/span> <span class=\"nx\">blob<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">useRef<\/span><span class=\"p\">(<\/span><span class=\"kc\">null<\/span><span class=\"p\">);<\/span>\n   <span class=\"kd\">const<\/span> <span class=\"nx\">file<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">useRef<\/span><span class=\"p\">(<\/span><span class=\"kc\">null<\/span><span class=\"p\">);<\/span>\n   <span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">stats<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setStats<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">useState<\/span><span class=\"p\">({});<\/span>\n\n   <span class=\"k\">return<\/span> <span class=\"o\">&lt;&gt;<\/span>\n      <span class=\"o\">&lt;<\/span><span class=\"nx\">UIState<\/span><span class=\"p\">.<\/span><span class=\"nx\">Provider<\/span> <span class=\"nx\">value<\/span><span class=\"o\">=<\/span><span class=\"p\">{{<\/span>\n         <span class=\"nx\">blob<\/span><span class=\"p\">,<\/span>\n         <span class=\"nx\">file<\/span><span class=\"p\">,<\/span>\n         <span class=\"nx\">setStats<\/span><span class=\"p\">,<\/span>\n         <span class=\"nx\">stats<\/span><span class=\"p\">,<\/span>\n      <span class=\"p\">}}<\/span><span class=\"o\">&gt;<\/span>\n         <span class=\"o\">&lt;<\/span><span class=\"nx\">IndexContainer<\/span><span class=\"o\">\/&gt;<\/span>\n         <span class=\"o\">&lt;<\/span><span class=\"nx\">div<\/span><span class=\"o\">&gt;<\/span>\n            <span class=\"o\">&lt;<\/span><span class=\"nx\">canvas<\/span> <span class=\"nx\">id<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"dl\">'<\/span><span class=\"s1\">canvas<\/span><span class=\"dl\">'<\/span><span class=\"p\">}<\/span><span class=\"o\">&gt;&lt;<\/span><span class=\"sr\">\/canvas<\/span><span class=\"err\">&gt;\n<\/span>         <span class=\"o\">&lt;<\/span><span class=\"sr\">\/div<\/span><span class=\"err\">&gt;\n<\/span>      <span class=\"o\">&lt;<\/span><span class=\"sr\">\/UIState.Provider<\/span><span class=\"err\">&gt;\n<\/span>   <span class=\"o\">&lt;<\/span><span class=\"sr\">\/&gt;<\/span><span class=\"err\">;\n<\/span><span class=\"p\">};<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u06a9\u0644 \u0628\u0631\u0646\u0627\u0645\u0647 \u062a\u062d\u062a \u0627\u06cc\u0646 \u0645\u0624\u0644\u0641\u0647 UI \u0632\u0646\u062f\u06af\u06cc \u0645\u06cc \u06a9\u0646\u062f.  \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0641\u0642\u0637 \u0628\u0647 \u0686\u0646\u062f \u0646\u06a9\u062a\u0647 \u0627\u0634\u0627\u0631\u0647 \u0645\u06cc \u06a9\u0646\u0645:<\/p>\n<ol>\n<li>\n<p>\u0645\u0646 \u0627\u0632 \u0632\u0645\u06cc\u0646\u0647 \u0628\u0631\u0627\u06cc \u062a\u062f\u0627\u0648\u0645 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0648 \u0627\u0634\u062a\u0631\u0627\u06a9\u200c\u06af\u0630\u0627\u0631\u06cc \u0648\u0636\u0639\u06cc\u062a \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u0645.  \u0628\u0647 \u0647\u0645\u06cc\u0646 \u062f\u0644\u06cc\u0644 \u062f\u0627\u0648\u0631\u06cc \u0628\u0631\u0627\u06cc \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f <code>blob<\/code> \u0648 <code>file<\/code>.  <code>stats<\/code> \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u0645\u0631\u0628\u0648\u0637 \u0628\u0647 \u062a\u0635\u0648\u06cc\u0631 \u067e\u0631\u062f\u0627\u0632\u0634 \u0634\u062f\u0647 \u0631\u0627 \u0646\u06af\u0647 \u0645\u06cc \u062f\u0627\u0631\u062f.  \u0645\u0646 \u0645\u06cc\u200c\u062e\u0648\u0627\u0647\u0645 \u0622\u0646 \u0645\u0642\u0627\u062f\u06cc\u0631 \u062f\u0631 \u062d\u0627\u0641\u0638\u0647 \u0628\u0627\u0642\u06cc \u0628\u0645\u0627\u0646\u0646\u062f \u062a\u0627 \u06a9\u0627\u0631\u0628\u0631 \u0645\u062c\u0628\u0648\u0631 \u0646\u0628\u0627\u0634\u062f \u062f\u0627\u0626\u0645\u0627\u064b \u0647\u0645\u0627\u0646 \u0641\u0627\u06cc\u0644 \u0631\u0627 \u0647\u0631 \u0628\u0627\u0631 \u06a9\u0647 \u0645\u06cc\u200c\u062e\u0648\u0627\u0647\u062f \u062a\u0646\u0638\u06cc\u0645\u0627\u062a \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0647\u062f \u062f\u0648\u0628\u0627\u0631\u0647 \u0628\u0627\u0631\u06af\u0630\u0627\u0631\u06cc \u06a9\u0646\u062f.<\/p>\n<\/li>\n<li>\n<p>\u062a\u0648\u062c\u0647 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u062f \u06a9\u0647 \u06cc\u06a9 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f <code>&lt;canvas&gt;<\/code> \u0639\u0646\u0635\u0631 \u062f\u0631\u0633\u062a \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u062f\u0631 \u0628\u0627\u0644\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647 \u062c\u0627\u0633\u0627\u0632\u06cc \u0634\u062f\u0647 \u0627\u0633\u062a.  \u0622\u0646 \u0639\u0646\u0635\u0631 \u062f\u0631 \u0646\u0647\u0627\u06cc\u062a \u062a\u0635\u0648\u06cc\u0631 \u067e\u0631\u062f\u0627\u0632\u0634 \u0634\u062f\u0647 \u0645\u0627 \u0631\u0627 \u0646\u06af\u0647 \u0645\u06cc \u062f\u0627\u0631\u062f \u0648 \u0646\u0645\u0627\u06cc\u0634 \u0645\u06cc \u062f\u0647\u062f.<\/p>\n<\/li>\n<\/ol>\n<p>\u062d\u0627\u0644\u0627 \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0647 \u0645\u0624\u0644\u0641\u0647 IndexContainer \u0646\u06af\u0627\u0647 \u06a9\u0646\u06cc\u0645:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"cm\">\/* IndexContainer.js *\/<\/span>\n\n<span class=\"k\">export<\/span> <span class=\"kd\">const<\/span> <span class=\"nx\">IndexState<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">createContext<\/span><span class=\"p\">({});<\/span>\n\n<span class=\"k\">export<\/span> <span class=\"kd\">const<\/span> <span class=\"nx\">IndexContainer<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n   <span class=\"k\">return<\/span> <span class=\"o\">&lt;&gt;<\/span>\n      <span class=\"o\">&lt;<\/span><span class=\"nx\">IndexState<\/span><span class=\"p\">.<\/span><span class=\"nx\">Provider<\/span> <span class=\"nx\">value<\/span><span class=\"o\">=<\/span><span class=\"p\">{{}}<\/span><span class=\"o\">&gt;<\/span>\n         <span class=\"o\">&lt;<\/span><span class=\"nx\">Index<\/span><span class=\"o\">\/&gt;<\/span>\n      <span class=\"o\">&lt;<\/span><span class=\"sr\">\/IndexState.Provider<\/span><span class=\"err\">&gt;\n<\/span>   <span class=\"o\">&lt;<\/span><span class=\"sr\">\/<\/span><span class=\"err\">&gt;\n<\/span><span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u0628\u0647 \u0646\u0638\u0631 \u0645\u06cc \u0631\u0633\u062f \u06cc\u06a9 \u062c\u0632\u0621 \u0628\u0633\u06cc\u0627\u0631 \u0628\u06cc \u0645\u0639\u0646\u06cc \u0627\u0633\u062a\u060c \u062f\u0631\u0633\u062a \u0627\u0633\u062a\u061f  \u062e\u0648\u0628\u060c \u062f\u0631 \u062d\u0627\u0644 \u062d\u0627\u0636\u0631 \u0641\u0642\u0637 \u06cc\u06a9 \u0645\u06a9\u0627\u0646 \u0646\u06af\u0647\u062f\u0627\u0631\u0646\u062f\u0647 \u0627\u0633\u062a.  IndexContainer Index \u0631\u0627 \u0645\u06cc \u067e\u06cc\u0686\u062f \u0632\u06cc\u0631\u0627 \u062f\u0631 \u0646\u0647\u0627\u06cc\u062a \u0645\u0646 \u0627\u0632 \u0622\u0646 \u0628\u0631\u0627\u06cc \u0630\u062e\u06cc\u0631\u0647 \u0647\u0645\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u0641\u0631\u0645 \u0645\u0648\u062c\u0648\u062f \u062f\u0631 \u0645\u0624\u0644\u0641\u0647 Index \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u062e\u0648\u0627\u0647\u0645 \u06a9\u0631\u062f.  \u0622\u0646\u0647\u0627 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0632\u0645\u06cc\u0646\u0647 \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u062e\u0648\u0627\u0647\u0646\u062f \u0628\u0648\u062f.  \u0627\u0645\u0627 \u062f\u0631 \u062d\u0627\u0644 \u062d\u0627\u0636\u0631\u060c \u0648\u0627\u0642\u0639\u0627\u064b \u0647\u06cc\u0686 \u06a9\u0627\u0631\u06cc \u0628\u0631\u0627\u06cc \u0627\u06cc\u0646 \u0645\u0624\u0644\u0641\u0647 \u0648\u062c\u0648\u062f \u0646\u062f\u0627\u0631\u062f\u060c \u0628\u0647 \u062c\u0632 \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc Index.<\/p>\n<p>\u062d\u0627\u0644\u0627 \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0647 \u0645\u0624\u0644\u0641\u0647 Index \u0646\u06af\u0627\u0647 \u06a9\u0646\u06cc\u0645:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"cm\">\/* Index.js *\/<\/span>\n\n<span class=\"k\">export<\/span> <span class=\"kd\">const<\/span> <span class=\"nx\">Index<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n   <span class=\"kd\">const<\/span> <span class=\"nx\">selectImageInputRef<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">useRef<\/span><span class=\"p\">(<\/span><span class=\"kc\">null<\/span><span class=\"p\">);<\/span>\n   <span class=\"kd\">const<\/span> <span class=\"nx\">file<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">useFile<\/span><span class=\"p\">();<\/span>\n\n   <span class=\"kd\">const<\/span> <span class=\"nx\">handleFile<\/span> <span class=\"o\">=<\/span> <span class=\"p\">(<\/span><span class=\"nx\">event<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{})<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n      <span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">source<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">event<\/span><span class=\"p\">.<\/span><span class=\"nx\">target<\/span><span class=\"p\">.<\/span><span class=\"nx\">files<\/span><span class=\"p\">;<\/span>\n      <span class=\"nx\">file<\/span><span class=\"p\">.<\/span><span class=\"nx\">read<\/span><span class=\"p\">(<\/span><span class=\"nx\">source<\/span><span class=\"p\">);<\/span>\n   <span class=\"p\">};<\/span>\n\n   <span class=\"kd\">const<\/span> <span class=\"nx\">handleImageButton<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n      <span class=\"nx\">selectImageInputRef<\/span><span class=\"p\">.<\/span><span class=\"nx\">current<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"nx\">selectImageInputRef<\/span><span class=\"p\">.<\/span><span class=\"nx\">current<\/span><span class=\"p\">.<\/span><span class=\"nx\">click<\/span><span class=\"p\">();<\/span>\n   <span class=\"p\">}<\/span>\n\n   <span class=\"k\">return<\/span> <span class=\"o\">&lt;&gt;<\/span>\n      <span class=\"o\">&lt;<\/span><span class=\"nx\">input<\/span>\n         <span class=\"nx\">accept<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"dl\">'<\/span><span class=\"s1\">image\/*<\/span><span class=\"dl\">'<\/span><span class=\"p\">}<\/span>\n         <span class=\"nx\">className<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"dl\">'<\/span><span class=\"s1\">displayNone<\/span><span class=\"dl\">'<\/span><span class=\"p\">}<\/span>\n         <span class=\"nx\">onChange<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">handleFile<\/span><span class=\"p\">}<\/span>\n         <span class=\"nx\">ref<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">selectImageInputRef<\/span><span class=\"p\">}<\/span>\n         <span class=\"nx\">type<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">inputType<\/span><span class=\"p\">.<\/span><span class=\"nx\">file<\/span><span class=\"p\">}<\/span>\n      <span class=\"sr\">\/<\/span><span class=\"err\">&gt;\n<\/span>      <span class=\"o\">&lt;<\/span><span class=\"nx\">Button<\/span>\n         <span class=\"nx\">onClick<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">handleImageButton<\/span><span class=\"p\">}<\/span>\n         <span class=\"nx\">variant<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"dl\">'<\/span><span class=\"s1\">contained<\/span><span class=\"dl\">'<\/span><span class=\"p\">}<\/span>\n      <span class=\"o\">&gt;<\/span>\n         <span class=\"nx\">Select<\/span> <span class=\"nx\">Image<\/span>\n      <span class=\"o\">&lt;<\/span><span class=\"sr\">\/Button<\/span><span class=\"err\">&gt;\n<\/span>   <span class=\"o\">&lt;<\/span><span class=\"sr\">\/&gt;<\/span><span class=\"err\">;\n<\/span><span class=\"p\">};<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0645\u0627 \u06cc\u06a9 \u067e\u0646\u0647\u0627\u0646 \u062f\u0627\u0631\u06cc\u0645 <code>&lt;input&gt;<\/code> \u0639\u0646\u0635\u0631\u06cc \u06a9\u0647 \u062f\u0631 \u0648\u0627\u0642\u0639 \u06a9\u0627\u0631 \u06af\u0631\u0641\u062a\u0646 \u062a\u0635\u0648\u06cc\u0631 \u0627\u0646\u062a\u062e\u0627\u0628\u06cc \u06a9\u0627\u0631\u0628\u0631 \u0631\u0627 \u0627\u0646\u062c\u0627\u0645 \u0645\u06cc \u062f\u0647\u062f.  \u0645\u0627 \u0647\u0645\u0686\u0646\u06cc\u0646 \u06cc\u06a9 \u0631\u0627\u0628\u0637 \u06a9\u0627\u0631\u0628\u0631\u06cc Material UI \u062f\u0627\u0631\u06cc\u0645 <code>&lt;Button&gt;<\/code> \u06a9\u0647 \u06a9\u0646\u062a\u0631\u0644 \u0645\u06cc \u06a9\u0646\u062f <code>&lt;input&gt;<\/code> \u0639\u0646\u0635\u0631  \u0628\u0647 \u0647\u0645\u06cc\u0646 \u062f\u0644\u06cc\u0644 \u0627\u0633\u062a \u06a9\u0647 \u0645\u0627 \u0622\u0646 \u0631\u0627 \u062f\u0627\u0631\u06cc\u0645 <code>selectImageInputRef<\/code> \u0645\u0631\u062c\u0639.<\/p>\n<p>\u0627\u06cc\u0646 <code>handleFile()<\/code> \u062a\u0627\u0628\u0639 \u0686\u06cc\u0632\u06cc \u0627\u0633\u062a \u06a9\u0647 \u062f\u0631 \u0648\u0627\u0642\u0639 \u067e\u0631\u062f\u0627\u0632\u0634 \u0641\u0627\u06cc\u0644 \u062a\u0635\u0648\u06cc\u0631 \u0631\u0627 \u0634\u0631\u0648\u0639 \u0645\u06cc \u06a9\u0646\u062f.  \u0628\u0647 \u0637\u0648\u0631 \u062e\u0627\u0635\u060c \u0622\u0646 \u0631\u0627 \u0635\u062f\u0627 \u0645\u06cc \u06a9\u0646\u062f <code>read()<\/code> \u0639\u0645\u0644\u06a9\u0631\u062f \u062f\u0631 <code>useFile<\/code> \u0642\u0644\u0627\u0628.  <\/p>\n<p>\u067e\u0633 \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0646\u06af\u0627\u0647 \u06a9\u0646\u06cc\u0645 <code>useFile<\/code> \u0642\u0644\u0627\u0628:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"cm\">\/* useFile.js *\/<\/span>\n\n<span class=\"k\">export<\/span> <span class=\"kd\">const<\/span> <span class=\"nx\">useFile<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n   <span class=\"kd\">const<\/span> <span class=\"nx\">image<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">useImage<\/span><span class=\"p\">();<\/span>\n   <span class=\"kd\">const<\/span> <span class=\"nx\">uiState<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">useContext<\/span><span class=\"p\">(<\/span><span class=\"nx\">UIState<\/span><span class=\"p\">);<\/span>\n\n   <span class=\"kd\">const<\/span> <span class=\"nx\">read<\/span> <span class=\"o\">=<\/span> <span class=\"p\">(<\/span><span class=\"nx\">chosenFile<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{})<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n      <span class=\"kd\">const<\/span> <span class=\"nx\">fileReader<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">FileReader<\/span><span class=\"p\">();<\/span>\n      <span class=\"nx\">fileReader<\/span><span class=\"p\">.<\/span><span class=\"nx\">onloadend<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">event<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n         <span class=\"nx\">uiState<\/span><span class=\"p\">.<\/span><span class=\"nx\">file<\/span><span class=\"p\">.<\/span><span class=\"nx\">current<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">chosenFile<\/span><span class=\"p\">;<\/span>\n         <span class=\"nx\">uiState<\/span><span class=\"p\">.<\/span><span class=\"nx\">blob<\/span><span class=\"p\">.<\/span><span class=\"nx\">current<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">event<\/span><span class=\"p\">.<\/span><span class=\"nx\">target<\/span><span class=\"p\">.<\/span><span class=\"nx\">result<\/span><span class=\"p\">;<\/span>\n         <span class=\"nx\">image<\/span><span class=\"p\">.<\/span><span class=\"nx\">create<\/span><span class=\"p\">(<\/span><span class=\"nx\">uiState<\/span><span class=\"p\">.<\/span><span class=\"nx\">blob<\/span><span class=\"p\">.<\/span><span class=\"nx\">current<\/span><span class=\"p\">);<\/span>\n      <span class=\"p\">};<\/span>\n      <span class=\"k\">try<\/span> <span class=\"p\">{<\/span>\n         <span class=\"nx\">fileReader<\/span><span class=\"p\">.<\/span><span class=\"nx\">readAsDataURL<\/span><span class=\"p\">(<\/span><span class=\"nx\">chosenFile<\/span><span class=\"p\">);<\/span>\n      <span class=\"p\">}<\/span> <span class=\"k\">catch<\/span> <span class=\"p\">(<\/span><span class=\"nx\">e<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n         <span class=\"c1\">\/\/ no file - do nothing<\/span>\n      <span class=\"p\">}<\/span>\n   <span class=\"p\">};<\/span>\n\n   <span class=\"k\">return<\/span> <span class=\"p\">{<\/span>\n      <span class=\"nx\">read<\/span><span class=\"p\">,<\/span>\n   <span class=\"p\">};<\/span>\n<span class=\"p\">};<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u06cc\u06a9 \u0646\u06cc\u0632 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f <code>reload()<\/code> \u0639\u0645\u0644\u06a9\u0631\u062f \u062f\u0631 \u0646\u0633\u062e\u0647 \u0646\u0647\u0627\u06cc\u06cc \u0627\u0632 <code>useFile<\/code> \u0642\u0644\u0627\u0628.  \u0627\u0645\u0627 \u062f\u0631 \u062d\u0627\u0644 \u062d\u0627\u0636\u0631\u060c \u0645\u0627 \u0641\u0642\u0637 \u0646\u06cc\u0627\u0632 \u062f\u0627\u0631\u06cc\u0645 <code>read()<\/code>.  \u062a\u0648\u062c\u0647 \u06a9\u0646\u06cc\u062f \u06a9\u0647 <code>read()<\/code> \u0645\u06a9\u0627\u0646 \u0641\u0627\u06cc\u0644 \u0648 \u062f\u0627\u062f\u0647 \u0647\u0627 \u0631\u0627 \u062f\u0631 ref \u0647\u0627\u06cc\u06cc \u06a9\u0647 \u062f\u0631 \u0622\u0646 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0631\u062f\u06cc\u0645 \u0630\u062e\u06cc\u0631\u0647 \u0645\u06cc \u06a9\u0646\u062f <code>UI<\/code> \u062c\u0632\u0621.<\/p>\n<p>\u062f\u0627\u0631\u0645 \u06cc\u06a9 \u0646\u0645\u0648\u0646\u0647 \u062c\u062f\u06cc\u062f \u0645\u06cc\u0633\u0627\u0632\u0645 <code>FileReader<\/code> \u0648 \u0633\u067e\u0633 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <code>readAsDataURL()<\/code> \u0628\u0631\u0627\u06cc \u0628\u0627\u0631\u06af\u0630\u0627\u0631\u06cc \u0645\u062d\u062a\u0648\u06cc\u0627\u062a  \u067e\u0633 \u0627\u0632 \u0628\u0627\u0631\u06af\u06cc\u0631\u06cc\u060c <code>onloadend<\/code> \u0634\u0644\u06cc\u06a9 \u062e\u0648\u0627\u0647\u062f \u06a9\u0631\u062f\u060c \u06a9\u0647 \u062f\u0631 \u0646\u0647\u0627\u06cc\u062a \u0628\u0647 <code>create()<\/code> \u0639\u0645\u0644\u06a9\u0631\u062f \u062f\u0631 <code>useImage<\/code> \u0642\u0644\u0627\u0628.<\/p>\n<p>\u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u06cc\u06a9 \u0646\u0633\u062e\u0647 \u0628\u062f\u0648\u0646 \u0627\u0633\u062a\u062e\u0648\u0627\u0646 \u0627\u0632 \u0622\u0646 \u0627\u0633\u062a <code>useImage<\/code> \u0642\u0644\u0627\u0628:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"cm\">\/* useImage.js *\/<\/span>\n\n<span class=\"k\">export<\/span> <span class=\"kd\">const<\/span> <span class=\"nx\">useImage<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n   <span class=\"kd\">const<\/span> <span class=\"nx\">canvas<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">useRef<\/span><span class=\"p\">(<\/span><span class=\"kc\">null<\/span><span class=\"p\">);<\/span>\n   <span class=\"kd\">const<\/span> <span class=\"nx\">context<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">useRef<\/span><span class=\"p\">(<\/span><span class=\"kc\">null<\/span><span class=\"p\">);<\/span>\n   <span class=\"kd\">const<\/span> <span class=\"nx\">image<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">useRef<\/span><span class=\"p\">(<\/span><span class=\"kc\">null<\/span><span class=\"p\">);<\/span>\n\n   <span class=\"nx\">useEffect<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n      <span class=\"nx\">canvas<\/span><span class=\"p\">.<\/span><span class=\"nx\">current<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">document<\/span><span class=\"p\">.<\/span><span class=\"nx\">getElementById<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">canvas<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\n   <span class=\"p\">},<\/span> <span class=\"p\">[]);<\/span>\n\n   <span class=\"kd\">const<\/span> <span class=\"nx\">create<\/span> <span class=\"o\">=<\/span> <span class=\"p\">(<\/span><span class=\"nx\">src<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">''<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n      <span class=\"kd\">const<\/span> <span class=\"nx\">source<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">src<\/span> <span class=\"o\">===<\/span> <span class=\"dl\">''<\/span> <span class=\"p\">?<\/span> <span class=\"nx\">image<\/span><span class=\"p\">.<\/span><span class=\"nx\">current<\/span><span class=\"p\">.<\/span><span class=\"nx\">src<\/span> <span class=\"p\">:<\/span> <span class=\"nx\">src<\/span><span class=\"p\">;<\/span>\n      <span class=\"kd\">const<\/span> <span class=\"nx\">newImage<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">Image<\/span><span class=\"p\">();<\/span>\n      <span class=\"nx\">newImage<\/span><span class=\"p\">.<\/span><span class=\"nx\">src<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">source<\/span><span class=\"p\">;<\/span>\n      <span class=\"nx\">newImage<\/span><span class=\"p\">.<\/span><span class=\"nx\">onload<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n         <span class=\"nx\">image<\/span><span class=\"p\">.<\/span><span class=\"nx\">current<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">newImage<\/span><span class=\"p\">;<\/span>\n         <span class=\"nx\">canvas<\/span><span class=\"p\">.<\/span><span class=\"nx\">current<\/span><span class=\"p\">.<\/span><span class=\"nx\">width<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">newImage<\/span><span class=\"p\">.<\/span><span class=\"nx\">width<\/span><span class=\"p\">;<\/span>\n         <span class=\"nx\">canvas<\/span><span class=\"p\">.<\/span><span class=\"nx\">current<\/span><span class=\"p\">.<\/span><span class=\"nx\">height<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">newImage<\/span><span class=\"p\">.<\/span><span class=\"nx\">height<\/span><span class=\"p\">;<\/span>\n         <span class=\"nx\">context<\/span><span class=\"p\">.<\/span><span class=\"nx\">current<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">canvas<\/span><span class=\"p\">.<\/span><span class=\"nx\">current<\/span><span class=\"p\">.<\/span><span class=\"nx\">getContext<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">2d<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"p\">{<\/span><span class=\"na\">alpha<\/span><span class=\"p\">:<\/span> <span class=\"kc\">false<\/span><span class=\"p\">,<\/span> <span class=\"na\">willReadFrequently<\/span><span class=\"p\">:<\/span> <span class=\"kc\">true<\/span><span class=\"p\">});<\/span>\n         <span class=\"nx\">context<\/span><span class=\"p\">.<\/span><span class=\"nx\">current<\/span><span class=\"p\">.<\/span><span class=\"nx\">drawImage<\/span><span class=\"p\">(<\/span><span class=\"nx\">newImage<\/span><span class=\"p\">,<\/span> <span class=\"mi\">0<\/span><span class=\"p\">,<\/span> <span class=\"mi\">0<\/span><span class=\"p\">);<\/span>\n      <span class=\"p\">}<\/span>\n   <span class=\"p\">};<\/span>\n\n   <span class=\"k\">return<\/span> <span class=\"p\">{<\/span>\n      <span class=\"nx\">create<\/span><span class=\"p\">,<\/span>\n   <span class=\"p\">};<\/span>\n<span class=\"p\">};<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u0627\u06cc\u0646\u062c\u0627 \u062c\u0627\u06cc\u06cc \u0627\u0633\u062a \u06a9\u0647 \u062c\u0627\u062f\u0648\u06cc \u0631\u0646\u062f\u0631 \u0631\u062e \u0645\u06cc \u062f\u0647\u062f.  \u0645\u0646\u0628\u0639 \u0627\u0632 <code>read()<\/code> \u0639\u0645\u0644\u06a9\u0631\u062f \u062f\u0631 <code>useFile<\/code> \u0642\u0644\u0627\u0628.  \u0633\u067e\u0633 \u0627\u0632 \u0622\u0646 \u0645\u0646\u0628\u0639 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 \u062a\u0635\u0648\u06cc\u0631 \u0645\u062c\u0627\u0632\u06cc \u062f\u0631 \u062d\u0627\u0641\u0638\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f <code>new Image()<\/code>.<\/p>\n<p>\u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u062a\u0635\u0648\u06cc\u0631 \u0645\u062c\u0627\u0632\u06cc \u0628\u0627\u0631\u06af\u0630\u0627\u0631\u06cc \u0634\u062f\u060c <code>onload<\/code> \u0622\u062a\u0634 \u0633\u0648\u0632\u06cc \u0647\u0627\u06cc \u0631\u0648\u06cc\u062f\u0627\u062f  \u062f\u0631 \u0622\u0646 \u062a\u0627\u0628\u0639 \u0645\u0646 \u0627\u0632 <code>canvas<\/code> ref \u06a9\u0647 \u062f\u0627\u062e\u0644\u0634 \u0648\u0635\u0644 \u0628\u0648\u062f <code>useEffect<\/code>.  \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u06cc\u06a9 \u0632\u0645\u06cc\u0646\u0647 \u0628\u0648\u0645 \u062c\u062f\u06cc\u062f \u0627\u06cc\u062c\u0627\u062f \u06a9\u0631\u062f\u0645\u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u0645 \u0627\u0632 \u0622\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u0645 <code>newImage<\/code> \u0628\u0631\u0627\u06cc \u0631\u0646\u062f\u0631 \u06a9\u0631\u062f\u0646 \u0622\u0646 \u0645\u0642\u0627\u062f\u06cc\u0631 \u062f\u0631 \u062f\u0627\u062e\u0644 \u0645\u062a\u0646.  <\/p>\n<p>\u0627\u06cc\u0646 \u0641\u0627\u06cc\u0644 \u062a\u0635\u0648\u06cc\u0631 \u0627\u0646\u062a\u062e\u0627\u0628\u06cc \u06a9\u0627\u0631\u0628\u0631 \u0631\u0627 \u0645\u06cc \u06af\u06cc\u0631\u062f \u0648 \u0631\u0648\u06cc \u0635\u0641\u062d\u0647 \u0646\u0645\u0627\u06cc\u0634 \u0645\u06cc \u062f\u0647\u062f.  \u062f\u0631 \u0627\u06cc\u0646 \u0645\u0631\u062d\u0644\u0647\u060c \u062a\u0645\u0627\u0645 \u06a9\u0627\u0631\u06cc \u06a9\u0647 \u0645\u0627 \u0627\u0646\u062c\u0627\u0645 \u062f\u0627\u062f\u0647 \u0627\u06cc\u0645 \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u062a\u0635\u0648\u06cc\u0631 \u062e\u0627\u0645 \u0631\u0627 \u0627\u0631\u0627\u0626\u0647 \u06a9\u0646\u06cc\u0645.  \u0627\u0645\u0627 \u0627\u06cc\u0646 \u0645\u0631\u062d\u0644\u0647 \u0627\u0648\u0644\u06cc\u0647 \u0645\u0647\u0645 \u0627\u0633\u062a.  \u0632\u06cc\u0631\u0627 \u0627\u06a9\u0646\u0648\u0646 \u06a9\u0647 \u0628\u0648\u0645 \u0631\u0627 \u0631\u0646\u062f\u0631 \u06a9\u0631\u062f\u0647 \u0627\u06cc\u0645 (\u0648 \u062f\u0631 \u062d\u0627\u0641\u0638\u0647 \u0628\u0627\u0642\u06cc \u0645\u0627\u0646\u062f\u0647 \u0627\u0633\u062a)\u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0622\u0646 \u0631\u0627 \u0628\u0631\u0627\u06cc \u0646\u06cc\u0627\u0632\u0647\u0627\u06cc \u062e\u0648\u062f \u062f\u0633\u062a\u06a9\u0627\u0631\u06cc \u06a9\u0646\u06cc\u0645.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/nabfollower.com\/blog\/wp-content\/uploads\/2023\/02\/\u0628\u0627\u0631\u06af\u06cc\u0631\u06cc-\u062a\u0635\u0627\u0648\u06cc\u0631-\u0628\u0627-ReactJavaScript-\u0627\u0646\u062c\u0645\u0646-DEV.jpg\" alt=\"\u062a\u0648\u0636\u06cc\u062d\u0627\u062a \u062a\u0635\u0648\u06cc\u0631\" loading=\"lazy\" width=\"880\" height=\"241\" title=\"\"><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%D8%AF%D8%B1_%D9%82%D8%B3%D8%B7_%D8%A8%D8%B9%D8%AF%DB%8C%E2%80%A6\"><\/span>\n<p>  \u062f\u0631 \u0642\u0633\u0637 \u0628\u0639\u062f\u06cc&#8230;<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0627\u06a9\u0646\u0648\u0646 \u06a9\u0647 \u062a\u0635\u0648\u06cc\u0631 \u0631\u0627 \u0628\u0627\u0631\u06af\u0630\u0627\u0631\u06cc \u06a9\u0631\u062f\u06cc\u0645\u060c \u0645\u0631\u062d\u0644\u0647 \u0628\u0639\u062f\u06cc \u067e\u06cc\u06a9\u0633\u0644 \u06a9\u0631\u062f\u0646 \u0622\u0646 \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f.  \u062f\u0631 \u0645\u0642\u0627\u0644\u0647 \u0628\u0639\u062f\u06cc \u0646\u062d\u0648\u0647 \u0627\u0646\u062c\u0627\u0645 \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u0628\u0631\u0646\u0627\u0645\u0647 \u0627\u06cc \u0646\u0634\u0627\u0646 \u062e\u0648\u0627\u0647\u0645 \u062f\u0627\u062f.<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>[NOTE: The live web app that encompasses this functionality can be found here: https:\/\/www.paintmap.studio. All of the underlying code for that site can be found here: https:\/\/github.com\/bytebodger\/color-map.] \u062f\u0631 \u0627\u0648\u0644\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0627\u0632 \u0627\u06cc\u0646 \u0645\u062c\u0645\u0648\u0639\u0647\u060c \u0645\u0646 \u062f\u0631 \u0645\u0648\u0631\u062f \u0686\u0627\u0644\u0634 \u0647\u0627\u06cc \u0645\u0631\u0628\u0648\u0637 \u0628\u0647 \u06af\u0631\u0641\u062a\u0646 \u06a9\u062f\u0647\u0627\u06cc \u0631\u0646\u06af \u062f\u06cc\u062c\u06cc\u062a\u0627\u0644 \u0627\u0632 \u0627\u0634\u06cc\u0627\u0621 \u062f\u0646\u06cc\u0627\u06cc \u0648\u0627\u0642\u0639\u06cc \u0635\u062d\u0628\u062a \u06a9\u0631\u062f\u0645. (\u06cc\u0627 \u0647\u0645\u0627\u0646\u0637\u0648\u0631 \u06a9\u0647 \u0628\u0647 \u0627\u06cc\u0646 &hellip;<\/p>\n","protected":false},"author":2,"featured_media":7880,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[339],"tags":[],"class_list":["post-7879","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dev"],"_links":{"self":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/7879","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/comments?post=7879"}],"version-history":[{"count":0,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/7879\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media\/7880"}],"wp:attachment":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media?parent=7879"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/categories?post=7879"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/tags?post=7879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}