javascript-replace()基础，一次完成将"<,>"替换"<>"实例

代码

         var  data  =   " 123123,213,<,12312,>,312,3,cat,dsfsdfs, " ;
        alert(func(data));
         function  func(str)
        {
             var  reg  =   / <|> / g;
            str  =  str.replace(reg, function ($ 1 ){
                 if ($ 1 == ' < ' ){
                     return   ' &lt; ' ;
                } else {
                     return   ' &gt; ' ;
                }
            });
             return  str;
        }

很基础...能举一反三最好.