js转化html字符

/*1.用浏览器内部转换器实现html转码*/

htmlEncode:function (html){

//1.首先动态创建一个容器标签元素，如DIV

var temp = document.createElement ("div");

//2.然后将要转换的字符串设置为这个元素的innerText(ie支持)或者textContent(火狐，google支持)

(temp.textContent != undefined ) ? (temp.textContent = html) : (temp.innerText = html);

//3.最后返回这个元素的innerHTML，即得到经过HTML编码转换的字符串了

var output = temp.innerHTML;

temp = null;

return output;

/*2.用浏览器内部转换器实现html解码*/

htmlDecode:function (text){

//1.首先动态创建一个容器标签元素，如DIV

var temp = document.createElement("div");

//2.然后将要转换的字符串设置为这个元素的innerHTML(ie，火狐，google都支持)

temp.innerHTML = text;

//3.最后返回这个元素的innerText(ie支持)或者textContent(火狐，google支持)，即得到经过HTML解码的字符串了。

var output = temp.innerText || temp.textContent;

temp = null;

return output;

/*3.用正则表达式实现html转码*/

htmlEncodeByRegExp:function (str){

var s = "";

if(str.length == 0) return "";

s = str.replace(/&/g,"&");

s = s.replace(/

s = s.replace(/>/g,">");

s = s.replace(/ /g," ");

s = s.replace(/\'/g,"'");

s = s.replace(/\"/g,""");

return s;

/*4.用正则表达式实现html解码*/

htmlDecodeByRegExp:function (str){

var s = "";

if(str.length == 0) return "";

s = str.replace(/&/g,"&");

s = s.replace(/</g,"<");

s = s.replace(/>/g,">");

s = s.replace(/ /g," ");

s = s.replace(/'/g,"\'");

s = s.replace(/"/g,"\"");

return s;

}

};