JQuery attr方法与removeAttr方法_www.
   
        div{width:100px;margin:0px auto;border:1px solid red;}
   
   
   
        $(function () {
            $("#btnChange").click(function () {
                var $divs = $("div");
                //----1.举例1
                //$divs.eq(0).attr("MyAttr", "Ronaldo");   //eq返回指定下标的JQuery对象(注意:此时$divs中有两个div的dom元素)
                //$divs.eq(1).attr("MyAttr", "Ronaldo1");
                //alert($divs.attr("MyAttr"));             //读取MyAttr属性，注意，只会读取出第一个元素的该属性
                //----2.举例2    使用JSon格式设置attr
                //$divs.eq(0).attr({ "MyAttr": "Ronaldo", "Age": "19" });
                //$divs.eq(1).attr({ "MyAttr": "Rivaldo", "Age": "29" });
                //alert("MyAttr:" + $divs.eq(1).attr("MyAttr") + ",Age:" + $divs.eq(1).attr("Age"));
                //----3.举例3    移除属性
                $divs.eq(0).attr({ "MyAttr": "Ronaldo", "Age": "19" });
                $divs.eq(1).attr({ "MyAttr": "Rivaldo", "Age": "29" });
                alert("MyAttr:" + $divs.eq(1).attr("MyAttr") + ",Age:" + $divs.eq(1).attr("Age"));
                $divs.eq(1).removeAttr("Age");
                alert("MyAttr:" + $divs.eq(1).attr("MyAttr") + ",Age:" + $divs.eq(1).attr("Age"));
            });
        });