dom-demo/scrollToEle.html

<!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>Scroll滚动</title>
    <style>
        * {
            padding: 0;
            margin: 0;
        }
        body {
            height: 1600px;
            width: 100%;
        }
        .container {
            height: 800px;
            width: 1000px;
            margin: 100px auto;
            overflow-y: scroll;
            border: 2px solid #222;
        }
        .line1 {
            height: 400px;
            border: 10px solid #FB0A0A;
            padding: 20px;
            background-color: antiquewhite;
        }
        .line2 {
            height: 500px;
            background-color: #95FB0A;
            border: 10px solid #FB0AAE;
            padding: 20px;
        }
        .line3 {
            height: 600px;
            background-color: #FBA30A;
            border: 10px solid #200AFB;
            padding: 20px;
        }
        .rect {
            border: 1px solid #222;
            width: 100%;
            height: 100%;
        }
        .outer-content {
            position: fixed;
            left: 0;
            top: 0;
            right: 0;
        }

        #update-pos-button {
            cursor: pointer;
            z-index: 100;
        }
    </style>
</head>
<body>
    <p class="outer-content">body content</p>
    <div class="container" id="content-container">
        <div class="line1">
            <div class="rect rect1"></div>
        </div>
        <div class="line2">
            <div class="rect rect2"></div>
        </div>
        <div class="line3">
            <div class="rect rect3"></div>
        </div>
    </div>
    <img src="./iamges/boundrect.png" width="400"/>
    <img src="./iamges/box.png" width="400">
    <img src="./iamges/clientHeight.png" width="400">
    <img src="./iamges/offsetHeight.png" width="400">
    <img src="./iamges/scrollHeight.png" width="400">
    <img src="./iamges/scrolltop.png" width="400">
    <script src="./11-scoll-to-ele.ts" type="module"></script>

</body>
</html>