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How to prevent copying of text in Javascript

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Release: 2021-04-09 16:13:59
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How to prevent copying of text in Javascript

HTML content:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>禁止选中文字和禁止右键菜单</title>
</head>
<body>
</body>
</html>
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JS code:

<script>
         const p=document.querySelector(&#39;p&#39;);
         console.log(p);
         p.addEventListener("contextmenu",function(e){
            e.preventDefault();
         });
 </script>
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Although the above code cannot be selected by right-clicking and the menu will appear, it can still be selected by using the shortcut key ctrl c Copy, so you can modify it as follows:

<script>
         const p=document.querySelector(&#39;p&#39;);
         console.log(p);
         p.addEventListener("contextmenu",function(e){
            e.preventDefault();
         });
          p.addEventListener("selectstart",function(e){
             e.preventDefault();
         });
 </script>
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