This article describes the method of implementing floating windows that can be scaled, dragged, closed and minimized by JS. Share it for your reference. The specific implementation method is as follows:
Copy the code as follows:<!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>JS implements floating windows that can be scaled, dragged, closed and minimized</title>
</head>
<style type="text/css">
.divWindow{word-wrap:break-word;position:absolute; overflow:hidden;}
.divBar{border:#000000 1px solid;position:absolute;border-bottom:#000000 1px solid;width:100%;height:20px;background-color:#0099FF;cursor:hand;line-height:20px;}
.divChange{position:absolute;right:25px;font-size:10pt;}
.divClose{position:absolute;right:5px;font-size:11pt;}
.divTitle{position:absolute;left:5px;font-size:10pt;white-space:nowrap;text-overflow:ellipsis;-o-text-overflow:ellipsis;overflow: hidden;}
.divContent{border:#000000 1px solid;border-top:#000000 0px solid;position:absolute; top:20px;width:100%; background-color:#FFFFF; overflow-y:auto;
SCROLLBAR-BASE-COLOR: #FFFFF;SCROLLBAR-ARROW-COLOR: #999999;SCROLLBAR-FACE-COLOR: #EEEEE;SCROLLBAR-HIGHLIGHT-COLOR: #EEEEE;
SCROLLBAR-SHADOW-COLOR: #EEEEE;SCROLLBAR-3DLIGHT-COLOR: #FFFFF;SCROLLBAR-TRACK-COLOR: #FFFFF;SCROLLBAR-DARKSHADOW-COLOR: #CCCCCC;}
.divReSize{height:7px; width:7px; overflow:hidden; background-color:#0000FF; position:absolute; bottom:6px; right:6px; cursor:nw-resize}
.divIframe{height:100%;width:100%;}
</style>
<script language="javascript">
var zindex=0 //Global variables
function dragClass(name, title, content, left, top, width, height){
var isMouseDown=false;
var maximum=false;
var offX=0; //Set the X coordinate of the grab point
var offY=0; //Set the Y coordinate of the grab point
var oldLeft; //Save the X coordinates in normal state
var oldTop; //Save the Y coordinates in normal state
this.mousedown= function (){ //Press the drag point
Bar.setCapture(); //Set crawl
offX=parseInt(event.clientX)-parseInt(Window.style.left);
offY=parseInt(event.clientY)-parseInt(Window.style.top);
isMouseDown=true;
if(Window.style.zIndex<=zindex){
zindex++;
Window.style.zIndex=zindex;
}
}
this.mousemove= function (){ //Drag the window
if (isMouseDown && !maximum){
Bar.style.cursor='move'
Window.style.left=event.clientX-offX;
Window.style.top=event.clientY-offY;
if(Window.style.zIndex<=zindex){
zindex++;
Window.style.zIndex=zindex;
}
}
}
this.mouseup=function (){ //Release the button
Bar.releaseCapture(); //Cancel crawling
Bar.style.cursor='hand';
if (parseInt(Window.style.top)<0){
Window.style.top='0px';
}
if (parseInt(Window.style.left)<0){
Window.style.left='0px';
}
isMouseDown=false;
}
this.dblclick=function (){ //Double-click to minimize
if (!maximum){
oldLeft=Window.style.left; //Save the X coordinates in normal state
oldTop=Window.style.top; //Save the Y coordinates in normal state
Window.style.left='0px';
Window.style.top='0px';
Window.style.width= document.body.clientWidth; //The visible area of the web page is wide
Title.style.width=(document.body.clientWidth-40)+'px'; //Set the title length
ReSize.style.display='none';
if(Change.innerText=='-'){
Window.style.height='100%';
Content.style.height=document.body.clientHeight-20; //Visible area width of the web page - title height
}else{
Window.style.height='20px';
}
maximum=true;
}else{
Window.style.left=oldLeft;
Window.style.top=oldTop;
Window.style.width=width+'px';
Title.style.width=(width-40)+'px';
ReSize.style.display='';
if(Change.innerText=='-'){
Window.style.height=height+'px';
Content.style.height=parseInt(height-20)+'px';
}else{
Window.style.height='20px';
}
maximum=false;
}
if(Window.style.zIndex<=zindex){
zindex++;
Window.style.zIndex=zindex;
}
}
this.changeWindow=function (){ //Shrink the window
event.cancelBubble=true;
if(Change.innerText=='-'){
Window.style.height='20px';
Change.innerText='□';
Content.style.display='none';
ReSize.style.display='none';
}else{
if (maximum){
Window.style.height='100%';
Content.style.display='';
ReSize.style.display='';
Content.style.height=document.body.clientHeight-20; //Visible area width of the web page - title height
}else{
Window.style.height=height+'px';
Content.style.display='';
ReSize.style.display='';
Content.style.height=parseInt(height-20)+'px';
}
Change.innerText='-';
}
}
var Window=document.createElement("div");
Window.id="divWindow"+ name;
Window.className="divWindow";
Window.style.left=left+'px';
Window.style.top=top+'px';
Window.style.width=width+'px';
Window.style.height=height+'px';
Window.onclick=function(){
if(parseInt(Window.style.zIndex)<=zindex){
zindex++;
Window.style.zIndex=zindex;
}
}
this.Window=Window;
//Public attributes, which can be operated outside of the class; if you want to operate outside of the class, you can change the element to public attributes
var Bar=document.createElement("div");
Bar.id="divBar"+name;
Bar.onselectstart="return false";
Bar.className="divBar";
Bar.onmousedown=this.mousedown;
Bar.ondblclick=this.dblclick;
Bar.onmousemove=this.mousemove;
Bar.onmouseup=this.mouseup;
Window.appendChild(Bar);
var Title=document.createElement("span");
Title.id="divTitle"+ name;
Title.className="divTitle";
Title.style.width=(width-40)+'px'; //Adaptive title length
Title.innerText=title;
Bar.appendChild(Title);
var Change=document.createElement("span");
Change.id="divChange"+ name;
Change.className="divChange";
Change.innerText="-";
Change.ondblclick=this.changeWindow;
Change.onclick=this.changeWindow;
Bar.appendChild(Change);
var Close=document.createElement("span");
Close.id="divClose"+ name;
Close.onclick=function(){
Window.style.display='none';
}
Close.className="divClose";
Close.innerText="×";
Bar.appendChild(Close);
var Content=document.createElement("div");
Content.id="divContent"+ name;
Content.className="divContent"
Content.innerHTML=content;
Content.style.height=parseInt(height-20)+'px';
Window.appendChild(Content);
var ReSize=document.createElement("div");
ReSize.className="divReSize";
ReSize.onmousedown=function(){
if(Window.style.zIndex<=zindex){
zindex++;
Window.style.zIndex=zindex;
}
ReSize.setCapture();
isMouseDown=true;
}
ReSize.onmousemove=function(){
if (isMouseDown && !maximum)
{
width=parseInt(event.clientX)-parseInt(Window.style.left)+5;
height=parseInt(event.clientY)-parseInt(Window.style.top)+5;
if(width>100){ //Set the minimum width
Window.style.width=width+'px';
Title.style.width=(width-40)+'px';
}
if(height>100){ //Set the minimum height
Window.style.height=height+'px';
Content.style.height=parseInt(height-20)+'px';
}
}
}
ReSize.onmouseup=function(){
ReSize.releaseCapture();
isMouseDown=false;
}
Window.appendChild(ReSize);
var Iframe=document.createElement("iframe"); //Add an iframe, block the <select> control under IE6.0
Iframe.className="divIframe";
Window.appendChild(Iframe);
document.body.appendChild(Window);
}
</script>
<body>
<script>
//dragClass(ID, window title, content, X coordinate, Y coordinate, width, length)
var c1="Window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1 window 1";
objWin1=new dragClass('win1','Drag window 1',c1,0,150,300,300);
var c2="Window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2 window 2";
objWin2=new dragClass('win2','Drag window 2',c2,350,150,300,300);
var objWin3;
function openWin(){
if(objWin3==null){
var c3="123 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 3 window 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objWin3=new dragClass('win3',c3,c3,700,150,300,300);
}else{
if(objWin3.Window.style.display=='none'){
objWin3.Window.style.display='';
}
}
}
</script>
<input type="button" value="Pop up [Window 3]" onClick="openWin()" />
</body>
</html>
I hope this article will be helpful to everyone's JavaScript programming.