87 lines
2.1 KiB
HTML
87 lines
2.1 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Document</title>
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<link rel="stylesheet" href="http:///at.alicdn.com/t/font_3445167_ub2ivnoluaa.css">
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<style>
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body {
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margin: 0;
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padding: 0;
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width: 100%;
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height: 1000px;
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}
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.iconfont {
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font-size: 50px;
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position: absolute;
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top: 0px;
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}
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.header {
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width: 100%;
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height: 50px;
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background: red;
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overflow: hidden;
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position: relative;
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display: flex;
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align-items: center;
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justify-content: center;
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}
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</style>
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</head>
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<body>
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<div class="header">
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<i class="iconfont icon-shuaxin"></i>
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</div>
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</body>
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<script>
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var header = $(".header");
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var content = $("content");
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var startY = 0;
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$("body").onscroll = function (v) {
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if (document.documentElement.scrollTop == 0) {
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//绑定下拉事件
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v.addEventListener('touchstart', function (e) {
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startY = e.targetTouches[0].screenY;
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console.log("startY:", startY);
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console.log("touchstart:", e);
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})
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v.addEventListener('touchmove', function (e) {
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var moveY = e.targetTouches[0].screenY;
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console.log("moveY:", moveY);
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// 下滑
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if (startY > moveY) {
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console.log("下滑：",);
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} else {
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console.log("上滑");
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}
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})
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v.addEventListener('touchend', function (e) {
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console.log("touchend:", e);
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var endY = e.changedTouches[0].screenY;
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})
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console.log("到顶了:", header);
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} else {
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// header.className = "header"
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}
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}
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function $(className) {
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return document.querySelector(className)
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}
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</script>
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</html> |