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Implementation method of binding click event to each li node in JavaScript

高洛峰
高洛峰Original
2016-12-03 09:30:262593browse

Click event

<body>
<h2>javascript 事件</h2>
<ul>
<li>aaaa</li>
<li>aaaa111</li>
<li>aaaa222</li>
<li>aaaa3333</li>
<li>aaaa444</li> 
</ul>
<script type="text/javascript">
//获取所有li的节点
var list = document.getElementsByTagName("li");
//给每个li绑定事件
for(var i = 0;i<list.length;i++){
list[i].onclick = function(){
//弹出对应的li节点里面的内容
alert(this.innerHTML);
//将节点的颜色变成红色
this.style.color = "red";
}
}
</script>
</body>

Double-click event

<body>
<h2>javascript 事件</h2>
<ul>
<li>aaaa</li>
<li>aaaa111</li>
<li>aaaa222</li>
<li>aaaa3333</li>
<li>aaaa444</li> 
</ul>
<script type="text/javascript">
//获取所有li的节点
var list = document.getElementsByTagName("li");
//给每个li绑定事件
for(var i = 0;i<list.length;i++){
list[i].ondblclick = function(){
//弹出对应的li节点里面的内容
alert(this.innerHTML);
this.style.color = "red";
}
}
</script>
</body>

PS: Let’s take a look at the js loop to bind click events with different parameters to li

<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
</ul>
<script type="text/javascript">
var li=document.getElementsByTagName_r("li");
for(var i=0;i<li.length;i++){
(function(x){
li[x].onclick=function(){alert(x);}
})(i);
}
</script>

The value that pops up for each li is different

The above is a small The JavaScript I introduced to you binds click events to each li node. I hope it will be helpful to everyone


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