视频记录历史播放位置效果

简介

每次打开页面视频从上一次的播放位置开始播放

利用lodash库做节流

代码

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

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        video {
            width: 800px;
            height: 400px;
        }
    </style>

</head>

<body>

    <script src="https://cdn.bootcdn.net/ajax/libs/lodash.js/4.17.21/lodash.min.js"></script>

    <video src="https://v.itheima.net/LapADhV6.mp4" controls></video>
    <script>
        //视频节流
        const video = document.querySelector('video');
        //从本地存储拿取上次播放时长位置
        (function () {
            video.currentTime = localStorage.getItem('playTime')
        })()
        
        video.addEventListener('timeupdate', _.throttle(() =>{
            localStorage.setItem('playTime', video.currentTime)
        }, 1000))
        
    </script>
</body>

</html>