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大家可能看到別人的網(wǎng)站，一點(diǎn)注冊(cè)按鈕，會(huì)在本頁(yè)面彈出一個(gè)框，并且原網(wǎng)頁(yè)整體變黑，我們只能操作當(dāng)前

彈出頁(yè)面來(lái)進(jìn)行注冊(cè)等，可以說(shuō)，這種網(wǎng)頁(yè)形式是非常活潑和為大家喜歡的，其具體代碼演示如下：以下代碼來(lái)自（CSDN）

標(biāo)題

       function sAlert(str){
       document.body.style.overflow = "hidden";
       var msgw,msgh,bordercolor;
       msgw=400;//提示窗口的寬度
       msgh=100;//提示窗口的高度
       titleheight=25 //提示窗口標(biāo)題高度
       bordercolor="#336699";//提示窗口的邊框顏色
       titlecolor="#99CCFF";//提示窗口的標(biāo)題顏色

       var sWidth,sHeight;
       sWidth=document.body.offsetWidth;
       sHeight=screen.height;
       var bgObj=document.createElement("div");
       bgObj.setAttribute('id','bgDiv');
       bgObj.style.position="absolute";
       bgObj.style.top="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.left="0";
       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.background="white";
       msgObj.style.border="1px solid " + bordercolor;
           msgObj.style.position = "absolute";
       msgObj.style.left = "50%";
                  msgObj.style.top = "50%";
                  msgObj.style.font="12px/1.6em Verdana, Geneva, Arial, Helvetica, sans-serif";
                  msgObj.style.marginLeft = "-225px" ;
                  msgObj.style.marginTop = -75+document.documentElement.scrollTop+"px";
                  msgObj.style.width = msgw + "px";
                  msgObj.style.height =msgh + "px";
                  msgObj.style.textAlign = "center";
                  msgObj.style.lineHeight ="25px";
                  msgObj.style.zIndex = "10001";

         var title=document.createElement("h4");
         title.setAttribute("id","msgTitle");
         title.setAttribute("align","right");
         title.style.margin="0";
         title.style.padding="3px";
         title.style.background=bordercolor;
         title.style.filter="progid:DXImageTransform.Microsoft.Alpha(startX=20, startY=20, finishX=100, finishY=100,style=1,opacity=75,finishOpacity=100);";
         title.style.opacity="0.75";
         title.style.border="1px solid " + bordercolor;
         title.style.height="18px";
         title.style.font="12px Verdana, Geneva, Arial, Helvetica, sans-serif";
         title.style.color="white";
         title.style.cursor="pointer";
         title.innerHTML="關(guān)閉";
         title.onclick=function(){
              document.body.removeChild(bgObj);
                    document.getElementById("msgDiv").removeChild(title);
                    document.body.removeChild(msgObj);
                    document.body.style.overflow = "auto";
                    }
         document.body.appendChild(msgObj);
         document.getElementById("msgDiv").appendChild(title);
         var txt=document.createElement("p");
         txt.style.margin="1em 0"
         txt.setAttribute("id","msgTxt");
         txt.innerHTML=str;
               document.getElementById("msgDiv").appendChild(txt);
                }
      </ｓｃｒｉｐｔ>

</body>
</html>

文章來(lái)自：http://www.java50.com JAVA武林

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本文標(biāo)題：HTML實(shí)現(xiàn)彈出注冊(cè)頁(yè)面，整體背景變黑功能

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