JavaScript How to escape ",< and all special characters in JavaScript escape special characters in java,escape special characters python,escape

You need just to exchange " with &quot;.

A good idea is to take some more HTML entities:

  • < replace with &lt;
  • > replace with &gt;

<input type = "text" value="' }{ &quot; : ? &gt; &lt; \ ] [ ' ; / . ,">
Answer:1

By using the browsers DOM you can let the browser do the work for you.

Make a HTML node, append a text node to it and put in the text node the html code you wish to escape. Only for double quotes you might need to account by doing a replace on them to &quot; and single quotes to &#39;

function htmlspecialchars(str) {
  var div = document.createElement('div');
  var text = document.createTextNode(str);
  div.appendChild(text);
  return div.innerHTML.replace(/"/g,'&quot;').replace(/'/g,'&#39;');
}

console.log(htmlspecialchars("<html>"));
console.log(htmlspecialchars("<!DOCTYPE=\"RUBBISH\">"));
console.log(htmlspecialchars("' }{ \" : ? > < \\ ] [ ' ; / . ,"))
Answer:2

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