Question

js 判断li的个人,并且隐藏前两个li

<div id="content">
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
</ul>
</div>
求详细代码
js 判断li的数量,并且隐藏前两个li

Answer 1

var content=document.getElementById("content");
alert(document.getElementsByTagName("li").length); JS能判断出 想隐藏用FOR循环吧

Answer 2

var oLi = $('#content li');
console.log(oLi.length);
if(oLi.length=oLi.length){
$(oLi:gt(2)).hide()

}