JS简易下拉刷新动效

<!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>
        #body {
     
     
            width: 100%;
            height: 100%;
            background-color: #fff;
        }

        #ref {
     
     
            text-align: center;
            width: 100%;
            overflow: hidden;
        }

        html,
        body {
     
     
            width: 100%;
            height: 100%;
            background-color: #f8f8f8;
        }

        * {
     
     
            margin: 0;
            padding: 0;
        }

        .item {
     
     
            border-radius: 0.5em;
            min-height: 50px;
            background-color: #eee;
            margin: 2px;
        }
    </style>
</head>

<body>
    <div id="ref">刷新</div>
    <div id="body">
        <div class="item">
            <a href="www.baidu.com">
                百度一下你就知道
            </a>
        </div>
        <div class="item">
            <a href="www.bing.com">
                必应国内版
            </a>
        </div>
        <div class="item">
            <a href="www.baidu.com">
                百度一下你就知道
            </a>
        </div>
        <div class="item">
            <a href="www.bing.com">
                必应国内版
            </a>
        </div>
    </div>
</body>

</html>
<script>
    function addPd(ele, hidden) {
     
     
        if (ele && hidden) {
     
     
            hidden.style.height = '0';
            var start = 0;
            var last = 0;
            var moving = false;
            var waiting = false;
            function down(e) {
     
     
                if (!(moving || waiting)) {
     
     
                    var eve = window.event || e;
                    waiting = false;
                    moving = true;
                    start = eve.clientY ? eve.clientY : eve.touches[0].pageY;
                    if (hidden)
                        hidden.style.height = '0';
                }
            }
            function up(e) {
     
     
                moving = false;
                waiting = true;
                setTimeout(function () {
     
     
                    start = 0;
                    last = 0;
                    waiting = false;
                    if (hidden)
                        hidden.style.height = '0';
                }, 1000);
            }
            function move(e) {
     
     
                if (moving && !waiting) {
     
     
                    var eve = window.event || e;
                    var now = eve.clientY ? eve.clientY : eve.touches[0].pageY;
                    var mt = (Math.max(0, now - start) / 4) + 'px';
                    if (hidden)
                        hidden.style.height = mt;
                    if (now < last)
                        up()
                    last = now;
                }
            }
            ele.addEventListener('mousedown', function () {
     
      down(); });
            ele.addEventListener('mousemove', function () {
     
      move(); });
            ele.addEventListener('mouseup', function () {
     
      up(); });
            ele.addEventListener('touchstart', function () {
     
      down(); });
            ele.addEventListener('touchend', function () {
     
      up(); });
            ele.addEventListener('touchmove', function () {
     
      move(); });
        }
    }
    addPd(document.getElementById('body'), document.getElementById('ref'));
</script>
JS简易下拉刷新动效

猜你喜欢
