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jQuery implements functional methods to respond to scroll bar events

小云云
小云云Original
2018-01-29 10:22:041597browse

This article mainly introduces jQuery's function of responding to scroll bar events, which can realize real-time calculation and response functions for the scroll bar status. It has certain reference value. Friends who need it can refer to it. I hope it can help everyone.


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script type="text/javascript" src="jquery-1.7.2.min.js"></script>
<script type="text/javascript">
$(function() {
  var lazyheight = 0;
  //获取数据
  function showload() {
    lazyheight = parseFloat($(window).height()) + parseFloat($(window).scrollTop());
    if ($(document).height() - 100 <= lazyheight) {
      alert("xxx");
    }
  }
  //showload();
  //绑定事件
  $(window).bind("scroll",
  function() {
    //当滚动条滚动时
    showload();
  });
})
</script>
</head>
<body>
<img src="1.jpg"/><br/>
<img src="2.jpg"/><br/>
<img src="3.jpg"/>
</body>
</html>

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