js 去除空格

  function ec() {           

   var ss = " fsd fsdaf ";             

//去所有空格            

  alert(ss.replace(/[ ]/g, ""));             

//去两边空格           

   alert("1" + ss.Trim() + "2");          

 //去左边空格         

     alert("1" + ss.LTrim() + "2");             

//去右边空格         

     alert("1" + ss.RTrim() + "2");       

   }

         String.prototype.Trim = function () {      return this.replace(/(^\s*)|(\s*$)/g, ""); }

         String.prototype.LTrim = function () {    return this.replace(/(^\s*)/g, "");          }

         String.prototype.RTrim = function () {    return this.replace(/(\s*$)/g, "");          }