jquery实现简单的拖拽效果实例兼容所有主流浏览器(优化篇)

2019-11-20 22:35:58

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来源：转载

供稿：网友

相对于上一篇，优化了拖拽的效果。
js代码:fun.js

 
_MoveObj = null;//全部变量，用来表示当前div 
z_index = 0;//z方向 
jQuery.fn.myDrag=function(){ 
_IsMove = 0; //是否移动 1.移动 
_MouseLeft = 0; //div left坐标 
_MouseTop = 0; //div top坐标 
$(document).bind("mousemove",function(e){ 
if(_IsMove==1){ 
$(_MoveObj).offset({top:e.pageY-_MouseLeft,left:e.pageX-_MouseTop}); 
} 
}).bind("mouseup",function(){ 
_IsMove=0; 
$(_MoveObj).removeClass("downMouse"); 
}); 
return $(this).bind("mousedown",function(e){ 
_IsMove=1; 
_MoveObj = this; 
var offset =$(this).offset(); 
_MouseLeft = e.pageX - offset.left; 
_MouseTop = e.pageY - offset.top; 
z_index++; 
_MoveObj.style.zIndex=z_index; 
$(_MoveObj).addClass("downMouse"); 
}); 
} 

html代码:

复制代码代码如下:

 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 
<html> 
<head> 
<title>demo.htm</title> 
<meta http-equiv="content-type" content="text/html; charset=UTF-8"> 
<script src="scripts/jquery-1.7.1.min.js" type="text/javascript"></script> 
<script src="myFun.js" type="text/javascript"></script> 
<style type="text/css"> 
.myDiv{ 
background:#EAEAEA; 
width: 100px; 
height: 100px; 
border: 1px solid; 
cursor: pointer; 
text-align: center; 
line-height: 100px; 
} 
.downMouse{ 
cursor:move; 
filter:alpha(Opacity=80); 
-moz-opacity:0.5; 
opacity: 0.5; 
background-color:#ffffff; 
} 
</style> 
<script type="text/javascript"> 
$(function(){ 
$(".myDiv").myDrag(); 
//$("#myDiv2").myDrag(); 
}) 
</script> 
</head> 
<body> 
<div id="myDiv1" class="myDiv">拖拽1</div> 
<div id="myDiv2" class="myDiv">拖拽2</div> 
<div id="myDiv3" class="myDiv">拖拽3</div> 
<div id="myDiv4" class="myDiv">拖拽4</div> 
<div id="myDiv5" class="myDiv">拖拽5</div> 
<div id="myDiv6" class="myDiv">拖拽6</div> 
<div id="show"></div> 
</body> 
</html> 