js处理 JSON字符串、数组等




1.判断数组中是否包含某字符

Array.prototype.contains = function (v){

   var b = false ;

   for ( var i=0;i< this .length;i++){

     if ( this [i] == v){

       b = true ;

       break ;

     }

   }

   return b;

};




2.遍历JSON字符串

http://www.jb51.net/article/44441.htm





3.js中在数组中添加或删除元素

http://www.cnblogs.com/yuzhongwusan/archive/2008/12/15/1355378.html





4.js中数组中去重

http://www.jb51.net/article/54176.htm

5.json对象去重

  Array.prototype.unique= function () {
            var res = [this[0]];
            for (var i = 1; i < this.length; i++) {
                var repeat = false;
                for (var j = 0; j < res.length; j++) {
                    if (this[i].deptID == res[j].deptID) {
                        repeat = true;
                        break;
                    }
                }
                if (!repeat) {
                    res.push(this[i]);
                }
            }
            return res;
        }