Here you can find the source of unescape()
String.prototype.unescape = function() { return unescape(this).replace(/[-_]/g, ' '); }
String.prototype.unescapeEntities = function() { return this.replace(/&#([0-9]{1,4});/gi, function(match, numStr) { var num = parseInt(numStr, 10); return String.fromCharCode(num); }); };
String.prototype.unescapeHTML = function() { return String(this).replace("&", "&").replace("<", "<").replace(">", ">").replace('"', '"').replace(''', "'").replace('/', "/");
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; };
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; ...