防抖与节流

最新推荐文章于 2024-11-30 00:00:00 发布

喵喵程序媛

最新推荐文章于 2024-11-30 00:00:00 发布

阅读量127

点赞数

文章标签： js

本文链接：https://blog.youkuaiyun.com/weixin_47067248/article/details/107825083

版权

<!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>
        .box {
            width: 100px;
            height: 100px;
            background-color: burlywood;
        }

        body {
            height: 3000px;
        }
    </style>
</head>

<body>
    <div class="box"></div>
    <script>
        var box = document.querySelector(".box");
        var count = 0;

        //防抖调用
        box.onmousemove = debounce(function () {
            count++;
            box.innerHTML = count;
        }, 1000);
        //节流调用
        window.onscroll = throttle(function () {
            count++;
            console.log(count);
        }, 1000)

        //防抖
        function debounce(fn, wait) {
            var timer = null;
            return function () {
                clearInterval(timer);
                timer = setInterval(function () {
                    fn();
                    timer = null;
                }, wait)
            }

        }

        function throttle(fn, wait) {
            var timer = null;
            return function () {
                if (!timer) {
                    timer = setTimeout(function () {
                        fn();
                        timer = null;
                    }, wait);
                }
            }

        }
    </script>
</body>

</html>