JS弹出小窗口实例

演示地址：

具体代码：

-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd“>

弹出小窗口示例

点击弹出小窗口

var isshow=0;//0小窗口没有显示，1小窗口已显

function creatediv()

{????????????

????var msgw,msgh,bordercolor;

????msgw=400;//提示窗口的宽度

????msgh=505;//提示窗口的高度

????var sWidth,sHeight;

????if( top.location == self.location )

????????doc = document;

????var docElement = doc.documentElement;

????sWidth=docElement.clientWidth;

????sHeight = docElement.clientHeight;

????if( docElement.scrollHeight > sHeight )

????????sHeight = docElement.scrollHeight;

????var bgObj=document.createElement(“div”);

????bgObj.setAttribute(‘id’,’bgDiv’);

????bgObj.style.position=”absolute”;

????bgObj.style.top=”0″;

????bgObj.style.left=”0″;

????bgObj.style.background=”#777″;

????bgObj.style.filter=”progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75″;

????bgObj.style.opacity=”0.6″;

????bgObj.style.width=sWidth + “px”;

????bgObj.style.height=sHeight + “px”;

????bgObj.style.zIndex = “10000”;

????document.body.appendChild(bgObj);

????????

????var msgObj=document.createElement(“div”);

????msgObj.setAttribute(“id”,”msgDiv”);

????msgObj.setAttribute(“align”,”center”);

????msgObj.style.position = “absolute”;

????msgObj.style.left = “50%”;

????msgObj.style.background=”#fff”;

????msgObj.style.marginLeft = “-200px” ;

????msgObj.style.top = (document.documentElement.clientHeight/2+document.documentElement.scrollTop-252)+”px”;

????msgObj.style.width = msgw + “px”;

????msgObj.style.height =msgh + “px”;

????msgObj.style.zIndex = “10001”;

????msgObj.innerHTML = “这是弹出的小窗口！点我关闭窗口”;

????document.body.appendChild(msgObj);

}

function delWinD()

{

?? document.getElementById(“bgDiv”).style.display=”none”;

?? document.getElementById(“msgDiv”).style.display=”none”;

?? isshow=0;

}

function show()

{??

????isshow=1;

????if(!document.getElementById(“msgDiv”))//小窗口不存在

????????creatediv();

????else

????{

????????document.getElementById(“bgDiv”).style.display=””;

????????document.getElementById(“msgDiv”).style.display=””;

????????document.getElementById(“msgDiv”).style.top=(document.documentElement.clientHeight/2+document.documentElement.scrollTop-252)+”px”;

????}??

}