jQuery元素滚动

元素滚动

1. scrollTop():

读取/设置滚动条的Y坐标

2. $(document.body).scrollTop()+$(document.documentElement).scrollTop()

读取页面滚动条的Y坐标(兼容chrome和IE)

3. $('body,html').scrollTop(60);

滚动到指定位置(兼容chrome和IE)

<!DOCTYPE html>
<html>

<head>
  <meta charset="UTF-8">
  <title>13_元素滚动</title>
</head>
<body style="height: 2000px;">
<div style="border:1px solid black;width:100px;height:150px;overflow:auto">
  This is some text. This is some text. This is some text. This is some text.
  This is some text. This is some text. This is some text. This is some text.
  This is some text. This is some text. This is some text. This is some text.
  This is some text. This is some text. This is some text. This is some text.
  This is some text. This is some text. This is some text. This is some text.
  This is some text. This is some text. This is some text. This is some text.
  his is some text.
</div>
<br>
<br>
<br>
<button id="btn1">得到scrollTop</button>
<button id="btn2">设置scrollTop</button>

<!--
1. scrollTop():
  读取/设置滚动条的Y坐标
2. $(document.body).scrollTop()+$(document.documentElement).scrollTop()
  读取页面滚动条的Y坐标(兼容chrome和IE)
3. $('body,html').scrollTop(60);
  滚动到指定位置(兼容chrome和IE)
-->
<script src="js/jquery-1.10.1.js"></script>
<script>
  /*
   需求:
   1. 得到div或页面滚动条的坐标
   2. 让div或页面的滚动条滚动到指定位置
   */
  //1. 得到div或页面滚动条的坐标
  $('#btn1').click(function () {
    console.log($('div').scrollTop())
    //下面2种都是兼容了chrome和ie浏览器的写法，因为
    console.log($('html').scrollTop()+$('body').scrollTop())
    //原生js写法
    console.log($(document.documentElement).scrollTop()+$(document.body).scrollTop())  
  })
  //2. 让div或页面的滚动条滚动到指定位置
  $('#btn2').click(function () {
    $('div').scrollTop(200)
    //并集的写法，用逗号隔开，设置y轴离顶部300px，
    $('html,body').scrollTop(300)
  })
</script>
</body>

</html>