微信端防止下拉

本文参考了,https://segmentfault.com/a/1190000013335812

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=0,viewport-fit=cover">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<meta name="format-detection" content="telephone=no">
    <title>禁止下拉</title>
    <style type="text/css">
        .scroll{
        position:absolute; 
        overflow:scroll; 
        -webkit-overflow-scrolling: touch; 
        top:0; 
        left:0; 
        bottom:0; 
        right:0;
    }
    </style>
</head>
<body>
<div class="scroll">
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
禁止下拉!<br/>
是不是可以啊!!!
是的话
那就赞赏一下吧!
<img src="http://wxpad.cn/yunpan/cdn/imgsrc/1519366332.jpg" style="width: 100%;" />
</div>
</body>
<script type="text/javascript">
    //禁止下拉
    var overscroll = function(el) {
  el.addEventListener('touchstart', function() {
    var top = el.scrollTop
      , totalScroll = el.scrollHeight
      , currentScroll = top + el.offsetHeight
    //If we're at the top or the bottom of the containers
    //scroll, push up or down one pixel.
    //
    //this prevents the scroll from "passing through" to
    //the body.
    if(top === 0) {
      el.scrollTop = 1
    } else if(currentScroll === totalScroll) {
      el.scrollTop = top - 1
    }
  })
  el.addEventListener('touchmove', function(evt) {
    //if the content is actually scrollable, i.e. the content is long enough
    //that scrolling can occur
    if(el.offsetHeight < el.scrollHeight)
      evt._isScroller = true
  })
}
overscroll(document.querySelector('.scroll'));
document.body.addEventListener('touchmove', function(evt) {
  //In this case, the default behavior is scrolling the body, which
  //would result in an overflow.  Since we don't want that, we preventDefault.
  if(!evt._isScroller) {
    evt.preventDefault()
  }
})
</script>
</html>

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