问题遇到的现象和发生背景
这个有人知道怎么改吗qwq
问题相关代码，请勿粘贴截图
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
.tab {
margin: 100px auto;
width: 600px;
}
.tab-list {
width: 600px;
height: 40px;
background-color: rgb(223, 223, 223);
}
ul {
list-style: none;
padding: 0;
line-height: 40px;
}
li {
float: left;
padding: 0 20px;
}
.current {
background-color: red;
color: #fff;
}
.tab-con {
background-color: rgb(202, 202, 202);
width: 600px;
height: 200px;
}
.item {
display: none;
}
.background-color {
background-color: red;
color: #fff;
}
</style>
</head>
<body>
<div class="tab">
<div class="tab-list">
<ul>
<li class="current">商品介绍</li>
<li>规格与包装</li>
<li>售后保障</li>
<li>商品评价(5000+)</li>
</ul>
</div>
<div class="tab-con">
<div class="item" style="display:block">商品介绍模块</div>
<div class="item">规格与包装模块</div>
<div class="item">售后保障模块</div>
<div class="item">商品评价模块</div>
</div>
</div>
<script>
var tab_list = document.querySelector('.tab-list')
var li = tab_list.querySelectorAll('li');
var div = document.querySelector('.tab-con').querySelectorAll('.item');
for (var i = 0; i < li.length; i++) {
li[i].setAttribute('indet', i);
li[i].onclick = function () {
//上面用表格用排他思想
for (var i = 0; i < li.length; i++) {
li[i].className = '';
}
this.className = 'background-color';
var index = this.getAttribute('index');
// console.log(index);
// div[index].style.display = 'block';
for (var i = 0; i < div.length; i++) {
div[i].style.display = 'none';
}
div[index].style.display = 'block';
}
}
</script>
</body>
</html>
运行结果及报错内容
