本文實(shí)例講述了JS實(shí)現(xiàn)可展開折疊層的鼠標(biāo)拖曳效果。分享給大家供大家參考。具體如下：
這是一款簡單JS代碼實(shí)現(xiàn)的鼠標(biāo)拖曳圖層效果，比較精簡，大家參考一下。鼠標(biāo)點(diǎn)擊層標(biāo)題欄可實(shí)現(xiàn)層內(nèi)容的展開與折疊，按住標(biāo)題欄可實(shí)現(xiàn)層的拖動(dòng)。
運(yùn)行效果截圖如下：
在線演示地址如下：
http://demo.VeVB.COm/js/2015/js-fade-out-mouse-draw-style-demo/
具體代碼如下：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>鼠標(biāo)拖曳</title> </head> <body> <script type="text/javascript"> function drag(elementToDrag,event){ var startX=event.clientX,startY=event.clientY; var origX=elementToDrag.offsetLeft,origY=elementToDrag.offsetTop; var deltaX=startX-origX,deltaY=startY-origY; if(document.addEventListener){ document.addEventListener("mousemove",moveHandler,true); document.addEventListener("mouseup",upHandler,true); } else{ elementToDrag.setCapture(); elementToDrag.attachEvent("onmousemove",moveHandler); elementToDrag.attachEvent("onmouseup",upHandler); elementToDrag.attachEvent("onlosecapture",upHandler); } if(event.stopPropagation) event.stopPropagation(); else event.cancelBubble=true; if(event.preventDefault) event.preventDefault(); else event.returnValue=false; function moveHandler(e){ if(!e) e=window.event; elementToDrag.style.left=(e.clientX-deltaX)+"px"; elementToDrag.style.top=(e.clientY-deltaY)+"px"; elementToDrag.style.zIndex="10"; elementToDrag.getElementsByTagName("p")[0].innerHTML="clientX:"+e.clientX+"</br>"+"clientY:"+e.clientY+"</br>"+"offsetLeft:"+origX+"</br>"+"offsetTop:"+origY+"</br>"+"clientX-offsetLeft:"+deltaX+"</br>"+"clientY-offsetTop:"+deltaY+"</br>"; if(e.stopPropagation) e.stopPropagation(); else e.cancelBubble = true; } function upHandler(e){ if(!e) e=window.event; elementToDrag.style.zIndex="1"; if(document.removeEventListener){ document.removeEventListener("mouseup",upHandler,true); document.removeEventListener("mousemove",moveHandler,true); } else{ elementToDrag.detachEvent("onlosecapture",upHandler); elementToDrag.detachEvent("onmouseup",upHandler); elementToDrag.detachEvent("onmousemove",moveHandler); elementToDrag.releaseCapture(); } if(e.stopPropagation) e.stopPropagation(); else e.cancelBubble=true; } } </script> <div style="position:absolute;left:100px;top:100px;width:250px;background-color:#789;border:1px solid #f00"> <div style="background:#ccc;border-bottom:dotted black;padding:3px;font-weight:bold" onmousedown="drag(this.parentNode,event)">Drag Me1</div> <p>test</p> </div> <div style="position:absolute;left:100px;top:200px;width:250px;background-color:#789;border:1px solid #f00"> <div style="background:#ccc;border-bottom:dotted black;padding:3px;font-weight:bold" onmousedown="drag(this.parentNode,event)">Drag Me2</div> <p>test</p> </div> <div style="position:absolute;left:100px;top:300px;width:250px;background-color:#789;border:1px solid #f00"> <div style="background:#ccc;border-bottom:dotted black;padding:3px;font-weight:bold" onmousedown="drag(this.parentNode,event)">Drag Me3</div> <p>test</p> </div> </body></html>希望本文所述對大家的JavaScript程序設(shè)計(jì)有所幫助。
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