案例：javascript案例     状态：可编辑再运行    进入竖版
 运行结果　
​x
 
1
<!DOCTYPE html>
2
<html>
3
<body>
4
​
5
<h1>My Web Page</h1>
6
​
7
<p id="myPar">I am a paragraph.</p>
8
<div id="myDiv">I am a div.</div>
9
​
10
<p>
11
<button type="button" onclick="myFunction()">点击这里</button>
12
</p>
13
​
14
<script>
15
function myFunction()
16
{
17
document.getElementById("myPar").innerHTML="Hello World";
18
document.getElementById("myDiv").innerHTML="How are you?";
19
}
20
</script>
21
​
22
<p>当您点击上面的按钮时，两个元素会改变。</p>
23
​
24
</body>
25
</html>
26
​