how to escape xml entities in javascript? - Stack Overflow

how to escape xml entities in javascript? - Stack Overflow

HTML encoding is simply replacing &, ", ', < and > chars with their entity equivalents. Order matters, if you don't replace the & chars first, you'll double encode some of the entities:

if (!String.prototype.encodeHTML) {    String.prototype.encodeHTML = function () {      return this.replace(/&/g, '&amp;')                 .replace(/</g, '&lt;')                 .replace(/>/g, '&gt;')                 .replace(/"/g, '&quot;')                 .replace(/'/g, '&apos;');    };  }

_{As @Johan B.W. de Vries pointed out, this will have issues with the tag names, I would like to clarify that I made the assumption that this was being used for the value only}

Conversely if you want to decode HTML entities¹, make sure you decode & to & after everything else so that you don't double decode any entities:

if (!String.prototype.decodeHTML) {    String.prototype.decodeHTML = function () {      return this.replace(/&apos;/g, "'")                 .replace(/&quot;/g, '"')                 .replace(/&gt;/g, '>')                 .replace(/&lt;/g, '<')                 .replace(/&amp;/g, '&');    };  }

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