本文實例講述了js控制div彈出層實現方法。分享給大家供大家參考。具體分析如下：
這是個功能很好，且容易調用和控制的彈出層。感興趣的朋友可以調試運行一下看看效果如何~O(∩_∩)O~
<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>彈出窗口(可拖動，背景灰色透明)</title><script type="text/javascript"><!--/*FileName:AlertMsg.jstitle:提示標題content:提示的內容*/document.write("<style type=/"text/css/">*{padding:0; margin:0}.close{float:right;cursor:default}</style>")function $(id){ return document.getElementById(id)}function AlertMsg(title,content){var msgw,msgh,msgbg,msgcolor,bordercolor,titlecolor,titlebg,con;con = "<form><table style='margin:10px 15px 15px 15px; border:0;'><tr><th style='border:0; line-height:22px; padding:3px 0; vertical-align:top;font-weight:bold;'>分類：</th><td style='border:0; line-height:22px; padding:3px 0; vertical-align:top;width:75%;'><input type='text' name='typename' size='20'/></td></tr><tr><th></th><td style='border:0; line-height:22px; padding:3px 0; vertical-align:top;width:75%;'><button style='line-height:normal;' type='submit' onclick='return submitform()'>確定</button> <button style='line-height:normal;' type='reset'>取消</button></td></tr></table></form>";//彈出窗口設置msgw = 300; //窗口寬度msgh = 150; //窗口高度msgbg = "#FFF"; //內容背景msgcolor = "#000"; //內容顏色bordercolor = "#000"; //邊框顏色titlecolor = "#FFF"; //標題顏色titlebg = "#369"; //標題背景//遮罩背景設置var sWidth,sHeight;sWidth = screen.availWidth;sHeight = document.body.scrollHeight;//創建遮罩背景var maskObj = document.createElement("div");maskObj.setAttribute('id','maskdiv');maskObj.style.position = "absolute";maskObj.style.top = "0";maskObj.style.left = "0";maskObj.style.background = "#777";maskObj.style.filter = "Alpha(opacity=30);";maskObj.style.opacity = "0.3";maskObj.style.width = sWidth + "px";maskObj.style.height = sHeight + "px";maskObj.style.zIndex = "10000";document.body.appendChild(maskObj);//創建彈出窗口var msgObj = document.createElement("div")msgObj.setAttribute("id","msgdiv");msgObj.style.position ="absolute";msgObj.style.top = (screen.availHeight - msgh) / 4 + "px";msgObj.style.left = (screen.availWidth - msgw) / 2 + "px";msgObj.style.width = msgw + "px";msgObj.style.height = msgh + "px";msgObj.style.fontSize = "12px";msgObj.style.background = msgbg;msgObj.style.border = "1px solid " + bordercolor;msgObj.style.zIndex = "10001";//創建標題var thObj = document.createElement("div");thObj.setAttribute("id","msgth");thObj.className = "DragAble";thObj.style.cursor = "move";thObj.style.padding = "4px 6px";thObj.style.color = titlecolor;thObj.style.background = titlebg;var titleStr = "<a class='close' title='關閉' style='cursor:pointer' onclick='CloseMsg()'>關閉</a>"+"<span>"+ title +"</span>";thObj.innerHTML = titleStr;//創建內容var bodyObj = document.createElement("div");bodyObj.setAttribute("id","msgbody");bodyObj.style.padding = "10px";bodyObj.style.lineHeight = "1.5em";bodyObj.innerHTML = con;var txt = document.createTextNode(content)bodyObj.appendChild(txt);//生成窗口document.body.appendChild(msgObj);$("msgdiv").appendChild(thObj);$("msgdiv").appendChild(bodyObj);}function CloseMsg(){//移除對象document.body.removeChild($("maskdiv"));$("msgdiv").removeChild($("msgth"));$("msgdiv").removeChild($("msgbody"));document.body.removeChild($("msgdiv"));}//拖動窗口var ie = document.all; var nn6 = document.getElementById&&!document.all; var isdrag = false; var y,x; var oDragObj; function moveMouse(e) { if (isdrag) { oDragObj.style.top = (nn6 ? nTY + e.clientY - y : nTY + event.clientY - y)+"px"; oDragObj.style.left = (nn6 ? nTX + e.clientX - x : nTX + event.clientX - x)+"px"; return false; } } function initDrag(e) { var oDragHandle = nn6 ? e.target : event.srcElement; var topElement = "HTML"; while (oDragHandle.tagName != topElement && oDragHandle.className != "DragAble") { oDragHandle = nn6 ? oDragHandle.parentNode : oDragHandle.parentElement; } if (oDragHandle.className=="DragAble") { isdrag = true; oDragObj = oDragHandle.parentNode; nTY = parseInt(oDragObj.style.top); y = nn6 ? e.clientY : event.clientY; nTX = parseInt(oDragObj.style.left); x = nn6 ? e.clientX : event.clientX; document.onmousemove = moveMouse; return false; } } document.onmousedown = initDrag; document.onmouseup = new Function("isdrag=false"); //--></script></head><body><table width="600" border="0" cellspacing="0" cellpadding="0"> <tr > <td height="100" align="center" ><p><a href="javascript:AlertMsg("溫馨提示",'')">點我試試!</a></p> </td> </tr></table></div></body></html>希望本文所述對大家的javascript程序設計有所幫助。
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