如何解决微信浏览器拖动出现黑色/白色背景？

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149次点击 · 1146天前 · 两心

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三小只1146天前

先上实际实现h5页面效果图。

如图实现的需求为：固定header + 固定footer + 可滚动content
如众多网友说的直接给body阻止默认事件，实际上是不行的（代码一） document.body.addEventListener('touchmove',function(e){
e.preventDefault()
},false)
若想实现页面完全不可滚动的需求，需加一参数才可实现，具体不展开说明，可自行google（代码二）document.body.addEventListener('touchmove',function(e){
e.preventDefault()
},{ passive:false })
接下来介绍本文的具体解决方案：<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" cOntent="initial-scale=1, width=device-width, maximum-scale=1, user-scalable=no">
<meta http-equiv="X-UA-Compatible" cOntent="ie=edge">
<title>Document</title>
<style>
* {
padding: 0;
margin: 0;
}

.header, .footer {
position: fixed;
width: 100vw;
height: 40px;
line-height: 40px;
text-align: center;
z-index: 3;
}

.header {
top: 0;
border-bottom: 1px solid #e6e6e6;
}

.footer {
bottom: 0;
border-top: 1px solid #e6e6e6;

}

.scrollEle {
position: fixed;
width: 100vw;
top: 40px;
bottom: 40px;
z-index: 2;
background: #fff;
overflow-y: scroll;
-webkit-overflow-scrolling: touch;
}
</style>
</head>
<body>
<div >Header</div>
<div >
<p>......</p>
<p>......</p>
<p>......</p>
<p>......</p>
</div>
<div >Footer</div>
</body>
<script>
var startX = 0, startY = 0;

function touchStart(e) {
try {
var touch = e.touches[0],
x = Number(touch.pageX),
y = Number(touch.pageY);
startX = x;
startY = y;
} catch (e) {
alert(e);
}
}

document.addEventListener('touchstart', touchStart);
var ele = document.querySelector('.scrollEle');
ele.Ontouchmove= function (e) {
var point = e.touches[0],
eleTop = ele.scrollTop,
eleScrollHeight = ele.scrollHeight,
eleOffsetHeight = ele.offsetHeight,
eleTouchBottom = eleScrollHeight - eleOffsetHeight;
if (eleTop === 0) {
if (point.clientY > startY) {
e.preventDefault();
}
}
else if (eleTop === eleTouchBottom) {
if (point.clientY < startY) {
e.preventDefault()
}
}
};
</script>
</html>
主要思路就是监听content部分滚动，当其滚动到顶部或者底部的时候，阻止其默认事件。