1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
| <!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<div id="one"></div>
<div class="c1"></div>
<h1 class="c1"></h1>
<a href="###">哈哈哈哈</a>
<div class="box">
<a href="###">京东</a>
<a href="###">淘宝</a>
</div>
</body>
</html>
<script type="text/javascript">
var divArray=document.querySelectorAll("div");
console.log(divArray);
var c1Array=document.querySelectorAll(".c1");
console.log(c1Array);
var aArray=document.querySelectorAll(".box a:first-child");
console.log(aArray);
var a=document.querySelector(".box a");
console.log(a);
var one=document.querySelector("#one");
console.log(one);
</script>
|
