作业分析：选项卡开发
使用js实现一个选项卡效果
HTML标签
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>选项卡开发</title>
<link rel="stylesheet" href="./css/demo01.css">
</head>
<body>
<div class="tab">
<!-- 标题 -->
<div class="tab-title">
<div class="tt active">标题1</div>
<div class="tt">标题2</div>
<div class="tt">标题3</div>
</div>
<!-- 内容 -->
<div class="tab-content">
<div class="tc">内容1</div>
<div class="tc">内容2</div>
<div class="tc">内容3</div>
</div>
</div>
<!-- JS代码 -->
<script>
let tts = document.getElementsByClassName("tt")
// 循环
for (let i = 0; i < tts.length; i++) {
tts[i].onmouseenter = function() {
console.log("鼠标进入了第" + i + "个标题")
// 获取所有的内容标签
let tcs = document.getElementsByClassName("tc")
// 隐藏所有的内容标签
for(let j = 0; j < tcs.length; j++) {
tcs[j].style.display = "none"
}
tcs[i].style.display = "block"
for(let x = 0; x < tts.length; x++) {
tts[x].classList = "tt"
}
tts[i].classList = "tt active"
}
}
</script>
</body>
</html>
CSS
/* 公共样式 */
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html,
body {
width: 100%;
height: 100%;
}
html {
font-size: 10px;
}
/* 样式绘制选项卡区域 */
.tab {
width: 40rem;
height: 30rem;
border: solid 2px orange;
}
.tab-title {
height: 5rem;
width: 100%;
border-bottom: solid 1px orange;
display: flex;
flex-direction: row;
justify-content: space-between;
}
.tt {
height: 5rem;
line-height: 5rem;
flex: 1;
text-align: center;
font-size: 1.8rem;
}
.tt:hover {
background-color: orange;
color: white;
}
.tt.active {
background-color: orange;
color: white;
}
.tab-content {
width: 100%;
height: calc(100% - 5rem);
background-color: aquamarine;
position: relative;
}
.tc {
position: absolute;
display: none;
height: 100%;
width: 100%;
background-color: orange;
text-align: center;
font-size: 20px;
font-weight: 600;
}
.tc:nth-of-type(1) {
display: block;
background-color: rgb(25, 227, 160);
}
.tc:nth-of-type(2) {
background-color: rgb(50, 72, 182);
}
.tc:nth-of-type(3) {
background-color: rgb(41, 219, 219);
}
