弹出层居中
- JScript code
<script type="text/javascript"> var wWidth=100; var isIe=(document.all)?true:false; /*设置select的可见状态*/ function setSelectState(state){ var objl=document.getElementsByTagName('select'); for(var i=0;i <objl.length;i++) { objl[i].style.visibility=state; } } function mousePosition(ev) { if(ev.pageX || ev.pageY) { return {x:ev.pageX, y:ev.pageY}; } return { x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,y:ev.clientY + document.body.scrollTop - document.body.clientTop }; } /*弹出方法*/ function showMessageBox(wTitle,content,pos,wWidth) { closeWindow(); var bWidth=parseInt(document.documentElement.scrollWidth); var bHeight=parseInt(document.documentElement.scrollHeight); if(isIe){ setSelectState('hidden');} var back=document.createElement("div"); back.id="back"; var styleStr="top:0px;left:0px;position:absolute;background:#666;width:"+bWidth+"px;height:"+bHeight+"px;"; styleStr+=(isIe)?"filter:alpha(opacity=0);":"opacity:0;"; back.style.cssText=styleStr; document.body.appendChild(back); showBackground(back,50); var mesW=document.createElement("div"); mesW.id="mesWindow"; mesW.className="mesWindow"; mesW.innerHTML=" <div class='mesWindowTop'> <table width='100%' height='100%'> <tr> <td>"+wTitle+" </td> <td style='width:1px;'> <input type=\"image\" src=\"images/cancel.png\" title='关闭窗口' class='close' onclick='closeWindow();'/> </td> </tr> </table> </div> <div class='mesWindowContent' id='mesWindowContent'>"+content+" </div> <div class='mesWindowBottom'> </div>"; styleStr="left:"+(((pos.x-wWidth)>0)?(pos.x-wWidth):pos.x)+"px;top:"+(300)+"px;position:absolute;width:"+wWidth+"px;"; mesW.style.cssText=styleStr; document.body.appendChild(mesW); } /*让背景渐渐变暗*/ function showBackground(obj,endInt) { if(isIe) { obj.filters.alpha.opacity+=1; if(obj.filters.alpha.opacity <endInt) { setTimeout(function(){showBackground(obj,endInt)},5); } }else{ var al=parseFloat(obj.style.opacity); al+=0.1; obj.style.opacity=al; if(al <(endInt/1)) { setTimeout(function(){showBackground(obj,endInt)},5);} } } /*关闭窗口*/ function closeWindow() { if(document.getElementById('back')!=null) { document.getElementById('back').parentNode.removeChild(document.getElementById('back')); } if(document.getElementById('mesWindow')!=null) { document.getElementById('mesWindow').parentNode.removeChild(document.getElementById('mesWindow')); } if(isIe){ setSelectState('');} } /*测试弹出*/ function testMessageBox(ev) { var objPos = mousePosition(ev); messContent=" <div style='text-align:center;'></div>"; showMessageBox('<%=keFangWrite %>',messContent,objPos,500); } </script>怎么让它居中啊
[解决办法]
用百分比
[解决办法]
http://www.cnblogs.com/ZHUYIN/archive/2011/10/31/2229823.html参考
------解决方案--------------------
document.getElementById("Javascript.Div1").style.top=(document.documentElement.scrollTop+
(document.documentElement.clientHeight-document.getElementById("Javascript.Div1").offsetHeight)/2)+"px";
document.getElementById("Javascript.Div1").style.left=(document.documentElement.scrollLeft+
(document.documentElement.clientWidth-document.getElementById("Javascript.Div1").offsetWidth)/2)+"px";
[解决办法]
也就是设置层的
left=（浏览器可见区域的宽度-层的宽度）/2
top = (浏览器可见区域高度+滚动条滚动高度-层高度)/2
[解决办法]
offset
[解决办法]
[解决办法]
- JScript code
var styleStr="top:0px;left:0px;position:absolute;background:#666;width:"+bWidth+"px;height:"+bHeight+"px;"; styleStr+=(isIe)?"filter:alpha(opacity=0);":"opacity:0;"; back.style.cssText=styleStr; document.body.appendChild(back); showBackground(back,50);
[解决办法]
var divId = document.getElementById('你要弹出层的ID');
divId.style.left=(document.body.clientWidth-divId.clientWidth-200)/2;
divId.style.top=(document.body.clientHeight-divId.clientHeight-200)/2;
divId.style.display = "block";