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js之完全兼容ie与firefox的拖动层代码[测试好用]

时间:2020-05-12 人气:0

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html;charset=gb2312"> 
<title>zhou's html</title> 
</head> 
<body> 
一共三个层,下面还有一个,把他拖上来 
<div><span>Magnolia Mag.nolia</span><input type="text" style="width:50px" maxlength="5"/></div>

<div><span>Mozilla Red</span>
<input type="text" style="width:80px" maxlength="9"/></div>

<div><div>小 纸 条</div>一共三个层,下面还有一个,把他拖上来
<textarea style="width:130px;height:150px;">有了拖动层,做局部拖动很简单</textarea>
<input type="button" value="submit it"/></div>

<div><div>小 纸 条</div>一共三个层,下面还有一个,把他拖上来
<textarea style="width:130px;height:150px;">顺便练习下颜色搭配</textarea>
<input type="button" value="submit it"/></div>

<div><span>Shiny silver</span>
<input type="button" value="hit me"/></div>

<script type="text/javascript" charset="utf-8"> 
var $=function(id){return document.getElementById(id)}; 
Array.prototype.extend=function(C){for(var B=0,A=C.length;B<A;B++){this.push(C[B]);}return this;} 
function divDrag(){ 
var A,B,$cn; 
var zIndex=1; 
this.dragStart=function(e){ 
e=e||window.event; 
if((e.which && (e.which!=1))||(e.button && (e.button!=1)))return; 
var pos=this.$pos; 
$cn=this.parent||this; 
if(document.defaultView){ 
_top=document.defaultView.getComputedStyle($cn,null).getPropertyValue("top"); 
_left=document.defaultView.getComputedStyle($cn,null).getPropertyValue("left");} 
else{ 
if($cn.currentStyle){_top=$cn.currentStyle["top"];_left=$cn.currentStyle["left"];}} 
pos.ox=(e.pageX||(e.clientX+document.documentElement.scrollLeft))-parseInt(_left); 
pos.oy=(e.pageY||(e.clientY+document.documentElement.scrollTop))-parseInt(_top); 
if(!!A){ 
if(document.removeEventListener){ 
document.removeEventListener("mousemove",A,false); 
document.removeEventListener("mouseup",B,false);} 
else{ 
document.detachEvent("onmousemove",A); 
document.detachEvent("onmouseup",B);}} 
A=this.dragMove.create(this); 
B=this.dragEnd.create(this); 
if(document.addEventListener){ 
document.addEventListener("mousemove",A,false); 
document.addEventListener("mouseup",B,false);} 
else{ 
document.attachEvent("onmousemove",A); 
document.attachEvent("onmouseup",B);} 
$cn.style.zIndex=(++zIndex); 
this.stop(e); 
} 
this.dragMove=function(e){ 
e=e||window.event; 
var pos=this.$pos; 
$cn=this.parent||this; 
$cn.style.top=(e.pageY||(e.clientY+document.documentElement.scrollTop))-parseInt(pos.oy)+'px'; 
$cn.style.left=(e.pageX||(e.clientX+document.documentElement.scrollLeft))-parseInt(pos.ox)+'px'; 
this.stop(e);} 
this.dragEnd=function(e){ 
var pos=this.$pos; 
e=e||window.event; 
if((e.which && (e.which!=1))||(e.button && (e.button!=1)))return; 
$cn=this.parent||this; 
if(!!(this.parent)){this.style.backgroundColor=pos.color} 
if(document.removeEventListener){ 
document.removeEventListener("mousemove",A,false); 
document.removeEventListener("mouseup",B,false);} 
else{ 
document.detachEvent("onmousemove",A); 
document.detachEvent("onmouseup",B);} 
A=null; 
B=null; 
$cn.style.zIndex=(++zIndex); 
this.stop(e); 
} 
this.shiftColor=function(){ 
this.style.backgroundColor="#EEEEEE"; 
} 
this.position=function (e){ 
var t=e.offsetTop; 
var l=e.offsetLeft; 
while(e=e.offsetParent){ 
t+=e.offsetTop; 
l+=e.offsetLeft;} 
return {x:l,y:t,ox:0,oy:0,color:null} 
} 
this.stop=function(e){ 
if(e.stopPropagation){e.stopPropagation();}else{e.cancelBubble=true;} 
if(e.preventDefault){e.preventDefault();}else{e.returnValue=false;} 
} 
this.stop1=function(e){ 
e=e||window.event; 
if(e.stopPropagation){e.stopPropagation();}else{e.cancelBubble=true;} 
} 
this.create=function(bind){ 
var B=this; 
var A=bind; 
return function(e){return B.apply(A,[e]);} 
} 
this.dragStart.create=this.create; 
this.dragMove.create=this.create; 
this.dragEnd.create=this.create; 
this.shiftColor.create=this.create; 
this.initialize=function(){ 
for(var A=0,B=arguments.length;A<B;A++){ 
C=arguments[A]; 
if(!(C.push)){C=[C];} 
$C=(typeof(C[0])=='object')?C[0]:(typeof(C[0])=='string'?$(C[0]):null); 
if(!$C)continue; 
$C.$pos=this.position($C); 
$C.dragMove=this.dragMove; 
$C.dragEnd=this.dragEnd; 
$C.stop=this.stop; 
if(!!C[1]){$C.parent=C[1];$C.$pos.color=$C.style.backgroundColor;} 
if($C.addEventListener){ 
$C.addEventListener("mousedown",this.dragStart.create($C),false); 
if(!!C[1]){$C.addEventListener("mousedown",this.shiftColor.create($C),false);}} 
else{$C.attachEvent("onmousedown",this.dragStart.create($C)); 
if(!!C[1]){$C.attachEvent("onmousedown",this.shiftColor.create($C));}} 
} 
} 
this.initialize.apply(this,arguments); 
} 
//生成拖动层很简单,只需要(参数之一如果是数组表示局部拖动,arr[0]表示拖动层,arr[1]表示整体) 
new divDrag( 
['test'], 
[$('test31'),$('test3')], 
$('test1') 
,$('test2') 
,[$('test41'),$('test4')]); 
</script> 
</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

下面是一些参考内容，直接查看上面的代码代码
先添加一个div层

复制代码代码如下:

<div id='pop-editor' style='width: 520px;height:430px;border:1px solid red;position: absolute;left:100px;top:200px;' onmousedown='down(event)' onmouseup='up()'>asdfdsf</div>

JavaScript代码如下：

复制代码代码如下:

var posX;
var posY;
var popDiv;
var dragable;

function down(e){
    popDiv = document.getElementById("pop-editor");
    e = e || window.event; //如果是IE
    posX = e.clientX - parseInt(popDiv.style.left);
    posY = e.clientY - parseInt(popDiv.style.top);
    dragable = true;
    document.onmousemove = move;
}

function move(ev){
    if(dragable == true){
        ev = ev || window.event;//如果是IE
        popDiv.style.left = (ev.clientX - posX) + "px";
        popDiv.style.top = (ev.clientY - posY) + "px";
    }
}

function up(){
    dragable = false;
}

兼容了IE/FireFox,其他的浏览器没试过。在IE中，event可以不用显示调用，全部用window.event就可以了，但是在FireFox中，必须显示event调用，也就是在调用函数的时候要带上event参数，如down(event)，在函数中也要判段event是在IE还是在FireFox下，ev = ev || window.event，如果在IE下，ev就是window.event，如果在FireFox下，ev就是event，这样就兼容了IE和Firefox

这里补充一下，在div中要设置left top position，position要是绝对的。

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