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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

            
              <h1>Preventing paste into an input field</h1>
<p>This example demonstrates how to stop a user from pasting content into a HTML input form field using JavaScript. Check the HTML and JavaScript panes for more details or scroll to the bottom to find a code example.</p>

<p>This example was created by <a href="https://dev.to/claireparker/how-to-prevent-pasting-into-input-fields-nn">Claire Parker-Jones</a> and I only forked it in case it was deleted or moved.

<div><label for="paste-ok">✅ You can paste in this field as normal</label></div>
<div><input type="text" id="paste-ok" /></div>

<div><label for="paste-no">🛑 You can't paste in this field: this uses the attribute <code>onpaste</code></label></div>
<div><input type="text" id="paste-no" onpaste="return false" />
</div>

<div><label for="paste-no-event">🛑 You can't paste in this field either: this uses an event listener attached to the input field</label></div>
<div><input type="text" id="paste-no-event" />
</div>

<p>📌 Works in modern browsers. The paste event is part of the Clipboard API. Check out the <a href="https://caniuse.com/#feat=clipboard">caniuse stats</a>.</p>



<h2>Code Example</h2>
<pre><code>&lt;input type="text" id="paste-no-event" /&gt;
&lt;script&gt;
  const pasteBox = document.getElementById("paste-no-event");
  pasteBox.onpaste = e => {
    e.preventDefault();
    return false;
  };
&lt;/script&gt;</code></pre>

<h2>Bypassing in Code</h2>

<p>Any of the following lines of code can remove the protection.</p>

<pre><code>
document.getElementById("paste-no").onpaste={};
document.getElementById("paste-no").onpaste=null;
document.getElementById("paste-no").onpaste=new function(){};
</code></pre>

<p>I can bypass the protection from the console or by DOM editing</p>

<pre><code>
document.getElementById("paste-no-event").value="hello";
</code></pre>
            
          
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CSS

            
              // All of this is for display only and does not affect the ability to paste.

input {
  height: 35px;
  width: 250px;
  border-radius: 10px;
  border: 1px solid black;
  font-size: 18px;
  padding: 3px;
  margin-bottom: 15px;
}

body {
  font-family: "Open Sans", sans-serif;
  font-size: 18px;
}

pre {
  background-color: #afafaf;
  padding: 20px;
  display: inline-block;
}

            
          
!

JS

            
              const pasteBox = document.getElementById("paste-no-event");
pasteBox.onpaste = e => {
  e.preventDefault();
  return false;
};

// Alternative syntax:

// pasteBox.addEventListener('paste', e => {
//   e.preventDefault();
//   return false;
// });
            
          
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999px

Console