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js实现获取div坐标的方法_javascript技巧

WBOYOriginal: 2016-05-16 15:31:561605browse

本文实例讲述了js实现获取div坐标的方法。分享给大家供大家参考，具体如下：

html中最常使用的控件就是div了,那么如何获取div的坐标呢?

如下方法可以实现：

/***
 * 获取div的坐标
 * @param divObj
 * @returns {{width: number, height: number, left: *, top: Window}}
 */
com.whuang.hsj.divCoordinate=function(divObj){
  if(typeof divObj == 'string'){
    divObj=com.whuang.hsj.$$id('divObj');
  }
  return {'width':divObj.offsetWidth,'height':divObj.offsetHeight,
    'x':divObj.offsetLeft,'y':divObj.offsetTop,
    'scrollLeft':com.whuang.hsj.getScroll().left,'scrollTop':com.whuang.hsj.getScroll().top};
}
// Cross browser gets the position of scroll
com.whuang.hsj.getScroll=function(){
  return {
    top:document.documentElement.scrollTop || document.body.scrollTop, 
    left:document.documentElement.scrollLeft || document.body.scrollLeft 
  }
}

com.whuang.hsj.divCoordinate()方法介绍

功能:返回div坐标;
参数:div对象或div的id(字符串);

返回值:对象,有六个属性:

width:div自身的宽度;
height:div自身的高度;
x:div左上角的坐标x;
y:div左上角的坐标y;
scrollLeft:水平滚动条的位置
scrollTop:竖直滚动条的位置

测试页面:

<html>
<head lang="en">
  <meta charset="UTF-8">
  <title></title>
  <script type="text/javascript" src="js/jquery-1.10.1.js"></script>
  <script type="text/javascript" src="js/common_util.js"></script>
  <script type="text/javascript">
  function run(){
      var loc=com.whuang.hsj.divCoordinate('divObj');
//      document.writeln();
      com.whuang.hsj.$$id('text22').innerHTML="width:"+loc.width+"   ,   height:"+loc.height+"  ,  scrollTop:"+loc.scrollTop+"  ,  scrollLeft:"+loc.scrollLeft+"  , x:"+loc.x+"  ,  y:"+loc.y;
    }
  </script>
</head>
<body>
<div style="width: 599px;height: 499px;background-color: mediumvioletred;" id="divObj" >
</div>
<br>
<input type="button" value="run" onclick="run();" >
<div id="text22" style="width: 400px;" >
  </div>
</body>
</html>

运行结果:

希望本文所述对大家JavaScript程序设计有所帮助。

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