通过javascript更改div ID [英] change div id by javascript
本文介绍了通过javascript更改div ID的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我创建了一个简单的页面，每当我按下Submit时就更改div ID.我的问题是，这是从div_top1-> div_top2更改的，但是第二次按下按钮时，它停止更改:(
I've created a simple page to change the div id every time I pressed submit. My problem is that this changes from div_top1 -> div_top2, but the second time I press the button, it stops changing :(
<!DOCTYPE html>
<html>
<head>
<script>
function changediv()
{
document.getElementById("div_top1").innerHTML=Date();
document.getElementById("div_top1").setAttribute("id", "div_top2");
document.getElementById("div_top2").innerHTML="teste";
document.getElementById("div_top2").setAttribute("id", "div_top1");
}
</script>
<style>
.top {
background-color: navy;
color: white;
padding: 10px 10px 10px 10px;
margin: 5px 5px 5px 5px;
}
.down {
background-color: aqua;
padding: 10px 10px 10px 10px;
margin: 5px 5px 5px 5px;
}
</style>
</head>
<body>
<div id="div_top1" class="top">This is a paragraph.</div>
<div class="down"><button type="button" onclick="changediv()">Display Date</button></div>
</body>
</html>
推荐答案
尝试一下:
function changediv()
{
if (document.getElementById("div_top1")) {
document.getElementById("div_top1").innerHTML=Date();
document.getElementById("div_top1").setAttribute("id", "div_top2");
}
else {
document.getElementById("div_top2").innerHTML="teste";
document.getElementById("div_top2").setAttribute("id", "div_top1");
}
}
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