Javascript String对象扩展HTML编码和解码的方法

String.prototype.HTMLEncode = function() { 
var temp = document.createElement ("div"); 
(temp.textContent != null) ? (temp.textContent = this) : (temp.innerText = this); 
var output = temp.innerHTML; 
temp = null; 
return output; 
} String.prototype.HTMLDecode = function() { 
var temp = document.createElement("div"); 
temp.innerHTML = this; 
var output = temp.innerText || temp.textContent; 
temp = null; 
return output; 
}