这篇文章主要介绍了javascript实现可拖动变色并关闭层窗口的方法,涉及javascript操作层的样式与属性的相关技巧,需要的朋友可以参考下
本文实例讲述了javascript实现可拖动变色并关闭层窗口的方法。分享给大家供大家参考。具体分析如下：
这是一款基于javascript+CSS实现层拖动的代码，不同的是它在拖动的时候窗口会变色，使操作体验更好一些，你可以运行代码查看效果。它还可以显示/隐藏或关闭打开的效果，没事的时候推敲一下
- <html>
- <head>
- <title>拖动窗口</title>
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
- <style type='text/css'>
- <!--
- body{font-size:12px;}
- a:visited{text-decoration:none;color:slategray;}
- a:hover{text-decoration:underline;color:slategray;}
- a:link{text-decoration:none;color:slategray;}
- -->
- </style>
- <script language=JScript>
- <!--
- var x0=0,y0=0,x1=0,y1=0;
- var offx=6,offy=6;
- var moveable=false;
- var hover='orange',normal='#336699';//color;
- var index=10000;//z-index;
- //开始拖动;
- function startDrag(obj)
- {
- if(event.button==1)
- {
- //锁定标题栏;
- obj.setCapture();
- //定义对象;
- var win = obj.parentNode;
- var sha = win.nextSibling;
- //记录鼠标和层位置;
- x0 = event.clientX;
- y0 = event.clientY;
- x1 = parseInt(win.style.left);
- y1 = parseInt(win.style.top);
- //记录颜色;
- normal = obj.style.backgroundColor;
- //改变风格;
- obj.style.backgroundColor = hover;
- win.style.borderColor = hover;
- obj.nextSibling.style.color = hover;
- sha.style.left = x1 + offx;
- sha.style.top = y1 + offy;
- moveable = true;
- }
- }
- //拖动;
- function drag(obj)
- {
- if(moveable)
- {
- var win = obj.parentNode;
- var sha = win.nextSibling;
- win.style.left = x1 + event.clientX - x0;
- win.style.top = y1 + event.clientY - y0;
- sha.style.left = parseInt(win.style.left) + offx;
- sha.style.top = parseInt(win.style.top) + offy;
- }
- }
- //停止拖动;
- function stopDrag(obj)
- {
- if(moveable)
- {
- var win = obj.parentNode;
- var sha = win.nextSibling;
- var msg = obj.nextSibling;
- win.style.borderColor = normal;
- obj.style.backgroundColor = normal;
- msg.style.color = normal;
- sha.style.left = obj.parentNode.style.left;
- sha.style.top = obj.parentNode.style.top;
- obj.releaseCapture();
- moveable = false;
- }
- }
- //获得焦点;
- function getFocus(obj)
- {
- if(obj.style.zIndex!=index)
- {
- index = index + 2;
- var idx = index;
- obj.style.zIndex=idx;
- obj.nextSibling.style.zIndex=idx-1;
- }
- }
- //最小化;
- function min(obj)
- {
- var win = obj.parentNode.parentNode;
- var sha = win.nextSibling;
- var tit = obj.parentNode;
- var msg = tit.nextSibling;
- var flg = msg.style.display=="none";
- if(flg)
- {
- win.style.height = parseInt(msg.style.height) + parseInt(tit.style.height) + 2*2;
- sha.style.height = win.style.height;
- msg.style.display = "block";
- obj.innerHTML = "0";
- }
- else
- {
- win.style.height = parseInt(tit.style.height) + 2*2;
- sha.style.height = win.style.height;
- obj.innerHTML = "2";
- msg.style.display = "none";
- }
- }
- //创建一个对象;
- function xWin(id,w,h,l,t,tit,msg)
- {
- index = index+2;
- this.id = id;
- this.width = w;
- this.height = h;
- this.left = l;
- this.top = t;
- this.zIndex = index;
- this.title = tit;
- this.message = msg;
- this.obj = null;
- this.bulid = bulid;
- this.bulid();
- }
- //初始化;
- function bulid()
- {
- var str = ""
- + "<div id=xMsg" + this.id + " "
- + "style='"
- + "z-index:" + this.zIndex + ";"
- + "width:" + this.width + ";"
- + "height:" + this.height + ";"
- + "left:" + this.left + ";"
- + "top:" + this.top + ";"
- + "background-color:" + normal + ";"
- + "color:" + normal + ";"
- + "font-size:8pt;"
- + "font-family:Tahoma;"
- + "position:absolute;"
- + "cursor:default;"
- + "border:2px solid " + normal + ";"
- + "' "
- + "onmousedown='getFocus(this)'>"
- + "<div "
- + "style='"
- + "background-color:" + normal + ";"
- + "width:" + (this.width-2*2) + ";"
- + "height:20;"
- + "color:white;"
- + "' "
- + "onmousedown='startDrag(this)' "
- + "onmouseup='stopDrag(this)' "
- + "onmousemove='drag(this)' "
- + "ondblclick='min(this.childNodes[1])'"
- + ">"
- + "<span style='width:" + (this.width-2*12-4) + ";padding-left:3px;'>" + this.title + "</span>"
- + "<span style='width:12;border-width:0px;color:white;font-family:webdings;' onclick='min(this)'>0</span>"
- + "<span style='width:12;border-width:0px;color:white;font-family:webdings;' onclick='ShowHide(/""+this.id+"/",null)'>r</span>"
- + "</div>"
- + "<div style='"
- + "width:100%;"
- + "height:" + (this.height-20-4) + ";"
- + "background-color:white;"
- + "line-height:14px;"
- + "word-break:break-all;"
- + "padding:3px;"
- + "'>" + this.message + "</div>"
- + "</div>"
- + "<div id=xMsg" + this.id + "bg style='"
- + "width:" + this.width + ";"
- + "height:" + this.height + ";"
- + "top:" + this.top + ";"
- + "left:" + this.left + ";"
- + "z-index:" + (this.zIndex-1) + ";"
- + "position:absolute;"
- + "background-color:black;"
- + "filter:alpha(opacity=40);"
- + "'></div>";
- document.body.insertAdjacentHTML("beforeEnd",str);
- }
- //显示隐藏窗口
- function ShowHide(id,dis){
- var bdisplay = (dis==null)?((document.getElementById("xMsg"+id).style.display=="")?"none":""):dis
- document.getElementById("xMsg"+id).style.display = bdisplay;
- document.getElementById("xMsg"+id+"bg").style.display = bdisplay;
- }
- //-->
- </script>
- <script language='JScript'>
- <!--
- function initialize()
- {
- var a = new xWin("1",160,200,200,200,"窗口1","xWin Demo");
- var b = new xWin("2",240,200,100,100,"窗口2","Welcome");
- var c = new xWin("3",200,160,250,50,"窗口3","Copyright");
- ShowHide("1","none");//隐藏窗口1
- }
- window.onload = initialize;
- //-->
- </script>
- </head>
- <base target="_blank">
- <body onselectstart='return false' oncontextmenu='return false' >
- <a onclick="ShowHide('1',null);return false;" href="">Windows 1</a>
- <a onclick="ShowHide('2',null);return false;" href="">Windows 2</a>
- <a onclick="ShowHide('3',null);return false;" href="">Windows 3</a>
- </body>
- </html>
希望本文所述对大家的javascript程序设计有所帮助。
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