How Can I Decode HTML Entities in JavaScript and jQuery?

HTML Entity Decoding

To encode and decode HTML entities using JavaScript or jQuery, consider employing the following techniques:

Decode Entities Function

Create a specialized function to handle decoding, as seen below:

var decodeEntities = (function() {
  var element = document.createElement('div');

  function decodeHTMLEntities(str) {
    if (str && typeof str === 'string') {
      str = str
        .replace(/<script[^>]*>([\S\s]*?)<\/script>/gmi, '')
        .replace(/<\/?\w(?:[^"'>]|"[^"]*"|'[^']*')*>/gmi, '');
      element.innerHTML = str;
      str = element.textContent;
      element.textContent = '';
    }

    return str;
  }

  return decodeHTMLEntities;
})();

Using the Decode Entities Function

To use this function, simply call it with the encoded string:

var decodedString = decodeEntities("&");

jQuery Plugin Integration

You can integrate the decodeEntities function as a jQuery plugin by adding the following line:

jQuery.decodeEntities = decodeEntities;

This function effectively decodes HTML entities, removing overhead and sanitizing HTML tags in the input.

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