移动端浏览器禁止页面下拉查看网址

<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>

以上代码执行之后就可以禁止了，如果禁止了则无法触发scroll事件，如果有需要 scroll的地方，在父元素添加class 为 scroll 即可。