完美的javascript模态窗口拖动、拖放大小

发布时间：2018-09-01 00:52:46 所属栏目：Unix 来源：站长网

导读：一款完美的javascript模态窗口拖动、拖放大小代码，作者是谁已经无从考究了，真的是很完美。详细功能介绍：除了拖动，还可拖动放大，像Windows窗口一样被放大或缩小，只要按住层的右下角，就可以收放自如的放大或缩校想使用的朋友，可将代码里的Js封装成

　　一款完美的javascript模态窗口拖动、拖放大小代码，作者是谁已经无从考究了，真的是很完美。

　　详细功能介绍：

　　除了拖动，还可拖动放大，像Windows窗口一样被放大或缩小，只要按住层的右下角，就可以收放自如的放大或缩校想使用的朋友，可将代码里的Js封装成类，从外部引入想必更合理些。

　　演示代码：

<!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=gb2312" /> <title>完美的javascript模态窗口拖动、拖放大小</title> <style> *{margin:0;padding:0;} #zhezhao{ width:100%; height:100%; background:#f00; filter:alpha(opacity:0); opacity:0; z-index:9999; position:absolute; top:0; left:0; display:none; } #div2{ width:200px; height:200px; position:relative; background:#EEEEEE; border:1px solid #f00; } #div1{ width:15px; height:15px; background:#99CC00; position:absolute; right:0px; bottom:0px; cursor:nw-resize; overflow:hidden; font-size:12px; text-align:center; line-height:15px; color:#FFFFFF; float:right; z-index:3; } #right{ width:15px; height:100%; background:#f00; float:right; position:absolute; right:0; top:0; cursor:e-resize; overflow:hidden; filter:alpha(opacity:0); opacity:0; z-index:1; } #bottom{ width:100%; height:15px; background:#f00; position:absolute; left:0; bottom:0; cursor:n-resize; overflow:hidden; filter:alpha(opacity:0); opacity:0; z-index:1; } #div2 p{ padding:10px; line-height:24px; font-size:13px; text-indent:24px; color:#996600; } #div2 h2{ width:100%; height:25px; line-height:25px; font-size:14px; background:#CC9900; color:#FFFFFF; text-indent:15px; cursor:move; overflow:hidden; } </style> <script type="text/javascript"> window.onload=function() { var oDiv=document.getElementById("div1"); var oDiv2=document.getElementById("div2"); var zhezhao=document.getElementById("zhezhao"); var h2=oDiv2.getElementsByTagName("h2")[0]; var right=document.getElementById("right"); var bottom=document.getElementById("bottom"); var mouseStart={}; var divStart={}; var rightStart={}; var bottomStart={}; //往右拽 right.onmousedown=function(ev) { var oEvent=ev||event; mouseStart.x=oEvent.clientX; mouseStart.y=oEvent.clientY; rightStart.x=right.offsetLeft; if(right.setCapture) { right.onmousemove=doDrag1; right.onmouseup=stopDrag1; right.setCapture(); } else { document.addEventListener("mousemove",doDrag1,true); document.addEventListener("mouseup",stopDrag1,true); } }; function doDrag1(ev) { var oEvent=ev||event; var l=oEvent.clientX-mouseStart.x+rightStart.x; var w=l+oDiv.offsetWidth; if(w<oDiv.offsetWidth) { w=oDiv.offsetWidth; } else if(w>document.documentElement.clientWidth-oDiv2.offsetLeft) { w=document.documentElement.clientWidth-oDiv2.offsetLeft-2; } oDiv2.style.width=w+"px"; }; function stopDrag1() { if(right.releaseCapture) { right.onmousemove=null; right.onmouseup=null; right.releaseCapture(); } else { document.removeEventListener("mousemove",doDrag1,true); document.removeEventListener("mouseup",stopDrag1,true); } }; //往下拽 bottom.onmousedown=function(ev) { var oEvent=ev||event; mouseStart.x=oEvent.clientX; mouseStart.y=oEvent.clientY; bottomStart.y=bottom.offsetTop; if(bottom.setCapture) { bottom.onmousemove=doDrag2; bottom.onmouseup=stopDrag2; bottom.setCapture(); } else { document.addEventListener("mousemove",doDrag2,true); document.addEventListener("mouseup",stopDrag2,true); } }; function doDrag2(ev) { var oEvent=ev||event; var t=oEvent.clientY-mouseStart.y+bottomStart.y; var h=t+oDiv.offsetHeight; if(h<oDiv.offsetHeight) { h=oDiv.offsetHeight; } else if(h>document.documentElement.clientHeight-oDiv2.offsetTop) { h=document.documentElement.clientHeight-oDiv2.offsetTop-2; } oDiv2.style.height=h+"px"; }; function stopDrag2() { if(bottom.releaseCapture) { bottom.onmousemove=null; bottom.onmouseup=null; bottom.releaseCapture(); } else { document.removeEventListener("mousemove",doDrag2,true); document.removeEventListener("mouseup",stopDrag2,true); } }; //往左右同时拽 oDiv.onmousedown=function(ev) { var oEvent=ev||event; mouseStart.x=oEvent.clientX; mouseStart.y=oEvent.clientY; divStart.x=oDiv.offsetLeft; divStart.y=oDiv.offsetTop; if(oDiv.setCapture) { oDiv.onmousemove=doDrag; oDiv.onmouseup=stopDrag; oDiv.setCapture(); } else { document.addEventListener("mousemove",doDrag,true); document.addEventListener("mouseup",stopDrag,true); } zhezhao.style.display='block'; }; function doDrag(ev) { var oEvent=ev||event; var l=oEvent.clientX-mouseStart.x+divStart.x; var t=oEvent.clientY-mouseStart.y+divStart.y; var w=l+oDiv.offsetWidth; var h=t+oDiv.offsetHeight; if(w<oDiv.offsetWidth) { w=oDiv.offsetWidth; } else if(w>document.documentElement.clientWidth-oDiv2.offsetLeft) { w=document.documentElement.clientWidth-oDiv2.offsetLeft-2; } if(h<oDiv.offsetHeight) { h=oDiv.offsetHeight; } else if(h>document.documentElement.clientHeight-oDiv2.offsetTop) { h=document.documentElement.clientHeight-oDiv2.offsetTop-2; } oDiv2.style.width=w+"px"; oDiv2.style.height=h+"px"; }; function stopDrag() { if(oDiv.releaseCapture) { oDiv.onmousemove=null; oDiv.onmouseup=null; oDiv.releaseCapture(); } else { document.removeEventListener("mousemove",doDrag,true); document.removeEventListener("mouseup",stopDrag,true); } zhezhao.style.display='none'; }; //h2完美拖拽 h2.onmousedown=function(ev) { var oEvent=ev||event; mouseStart.x=oEvent.clientX; mouseStart.y=oEvent.clientY; divStart.x=oDiv2.offsetLeft; divStart.y=oDiv2.offsetTop; if(h2.setCapture) { h2.onmousemove=doDrag3; h2.onmouseup=stopDrag3; h2.setCapture(); } else { document.addEventListener("mousemove",doDrag3,true); document.addEventListener("mouseup",stopDrag3,true); } zhezhao.style.display='block'; }; function doDrag3(ev) { var oEvent=ev||event; var l=oEvent.clientX-mouseStart.x+divStart.x; var t=oEvent.clientY-mouseStart.y+divStart.y; if(l<0) { l=0; } else if(l>document.documentElement.clientWidth-oDiv2.offsetWidth) { l=document.documentElement.clientWidth-oDiv2.offsetWidth; } if(t<0) { t=0; } else if(t>document.documentElement.clientHeight-oDiv2.offsetHeight) { t=document.documentElement.clientHeight-oDiv2.offsetHeight; } oDiv2.style.left=l+"px"; oDiv2.style.top=t+"px"; }; function stopDrag3() { if(h2.releaseCapture) { h2.onmousemove=null; h2.onmouseup=null; h2.releaseCapture(); } else { document.removeEventListener("mousemove",doDrag3,true); document.removeEventListener("mouseup",stopDrag3,true); } zhezhao.style.display='none'; } }; </script> </head> <body> <div id="div2"> <div style="width:100%; height:100%; overflow:hidden;"> <h2>完美的拖拽</h2> <p>体验不错的<b>Java</b>Script网页拖动，除了拖动，还可拖动放大，像Windows窗口一样被放大或缩小，只要按住层的右下角，就可以收放自如的放大或缩小。想使用的朋友，可将代码里的Js封装成类，从外部引入想必更合理些。'</p> <p>烈火学院 Liehuo.Net</p> <div id="right"></div> <div id="div1">拖</div> <div id="bottom"></div> </div> </div> <div id="zhezhao"></div> </body> </html><br /><center>如不能显示效果，请按Ctrl+F5刷新本页，更多网页代码：<a href='http://www.veryhuo.com/' target='_blank'>http://www.veryhuo.com/</a></center>
提示：可修改后代码再运行!

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