选项卡开发

<!DOCTYPE html>
<html lang="zh">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html,
        body {
            width: 100%;
            height: 100%;
        }

        html {
            font-size: 10px;
        }

        .tab {
            height: 50rem;
            width: 60rem;
            background-color: antiquewhite;
            border-radius: 8px;
            border: solid 2px #ebd0d0;
            overflow: hidden;

        }

        .tab-title {
            width: 100%;
            height: 5rem;
            background-color: rgb(207, 229, 247);
            border-bottom: solid 2px #e9cccc;
            display: flex;
            justify-content: space-between;
        }

        .tt {
            width: 33%;
            height: 100%;
            font-size: 1.5rem;
            border-right: solid 2px #e9cccc;
            text-align: center;
            line-height: 5rem;
            cursor: pointer;
        }

        .tt:nth-of-type(1) {
            background-color: beige;

        }

        .tt:nth-of-type(3) {
            border-right: none;
        }

        .tt:hover {
            background-color: aliceblue;
            color: #ebd0d0;
        }

        .tab-content {
            width: 100%;
            height: 100%;
            background-color: beige;
            position: relative;
        }

        .tc {
            width: 100%;
            height: 100%;
            position: absolute;
            display: none;
            text-align: center;
        }

        .tc:nth-of-type(1) {
            background-color: #ebd0d0;
            display: block;
            text-align: center;
            font-size: 1.8rem;
        }

        .tc:nth-of-type(2) {
            background-color: azure;
        }

        .tc:nth-of-type(3) {
            background-color: beige;
        }
    </style>
</head>

<body>
    <div class="tab">
        <div class="tab-title">
            <div class="tt">标题1</div>
            <div class="tt">标题2</div>
            <div class="tt">标题3</div>


        </div>
        <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>
    <script>
        let tts = document.getElementsByClassName("tt")
        for (let i = 0; i < tts.length; i++) {
            tts[i].onmouseenter = function () {
                console.log("当前鼠标进入了" + i + "个标题")
                let tcs = document.getElementsByClassName("tc")
                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>
![屏幕截图 2025-03-23 222635.png](https://upload-images.jianshu.io/upload_images/30319031-aba5b323cef75ea6.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
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