Nodejs HTML Unescape unescapeHtml()

Method Source Code

/**//from w w  w.j a v  a  2 s.  c om
 * Extended Objects
 *
 * Adds additional methods to javascript built-in types
 */

// Function for unescaping HTML encoded characters
String.prototype.unescapeHtml = function () {
    
    // Create a fake element and assign our string to its contents
    var temp = document.createElement("div");
    temp.innerHTML = this;
    
    // Get the contents (now natively escaped), remove the child node and retuin
    var result = temp.childNodes.length === 0 ? "" : temp.childNodes[0].nodeValue;
    if(temp.firstChild) temp.removeChild(temp.firstChild);
    return result;
};

Related

1. unescape()

   String.prototype.unescape = function() {
     return unescape(this).replace(/[-_]/g, ' ');
   

2. unescapeEntities()

   String.prototype.unescapeEntities = function() {
     return this.replace(/&#([0-9]{1,4});/gi, function(match, numStr) {
       var num = parseInt(numStr, 10);
       return String.fromCharCode(num);
     });
   };
   

3. unescapeHTML()

   String.prototype.unescapeHTML = function() {
     return String(this).replace("&amp;", "&").replace("&lt;", "<").replace("&gt;", ">").replace('&quot;', '"').replace('&#39;', "'").replace('&#x2F;', "/");
   

4. unescapeHtml()

   String.prototype.unescapeHtml = function () {
       var temp = document.createElement("div");
       temp.innerHTML = this;
       var result = temp.childNodes.length === 0 ? "" : temp.childNodes[0].nodeValue;
       if(temp.firstChild) temp.removeChild(temp.firstChild);
       return result;
   };
   

5. unescapeHtml()

   String.prototype.unescapeHtml = function () {
     var temp = document.createElement("div");
     temp.innerHTML = this;
     var result = "";
     for (var i = 0; i < temp.childNodes.length; i++) {
      result = result + temp.childNodes[i].nodeValue;
     temp.removeChild(temp.firstChild)
     return result;
   ...
   

6. unescapeHtml()

   String.prototype.unescapeHtml = function () {
       var temp = document.createElement("div");
       temp.innerHTML = this;
       var result = temp.childNodes[0].nodeValue;
       temp.removeChild(temp.firstChild);
       return result;
   

7. unescapeHtmlEntities()

   String.prototype.unescapeHtmlEntities = function () {
     try{
       var temp = document.createElement('textarea');
       temp.innerHTML = this;
       return temp.value;
     }catch(e){
       return this;
   

8. unescapeHtmlEntities()

   String.prototype.unescapeHtmlEntities = function () {
     try{
       var temp = document.createElement('textarea');
       temp.innerHTML = this;
       return temp.value;
     }catch(e){
       return this;