jquery闭包现象疑惑，谢谢解答！

Question

拜托，你没有试试吗？ 多右击几次看看效果...

Answer 1

因为每点一次就绑定多一次
这样试试
var b=false;
function right_click()
        {
            var event_top=event.y+"px";
            var event_left=event.x+"px";
            if(event.button==2)
            {
                $("#div_popMenu").show("slow");
                $("#div_popMenu").css("top",event_top);
                $("#div_popMenu").css("left",event_left);
                $("#div_popMenu ul").focus();

if(!b){
                $("#div_popMenu ul li").each(function(i){
                    $(this).hover(
                        function(){$(this).css("background-color","White");},
                        function(){$(this).css("background-color","Silver");}
                    );
                    $(this).click(function(){
                        alert($(this).html());
                    });
                    
                }); 
b=true;
}   
            }
            $("#div_popMenu").hover(
                        function(){$(this).css("display","block");},
                        function(){$(this).css("display","none");}
                )
            
        }