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普元日记---HTML5底部遮罩层

来源：互联网发布：理光软件研究所户口编辑：程序博客网时间：2024/05/16 15:56

<script type="text/javascript">
var docEle = function()
{
return document.getElementById(arguments[0]) || false;
}

function openNewDiv(_id)
{
var m = "mask";
if (docEle(_id)) document.body.removeChild(docEle(_id));
if (docEle(m)) document.body.removeChild(docEle(m));

//mask遮罩层

var newMask = document.createElement("div");
newMask.id = m;
newMask.style.position = "absolute";
newMask.style.zIndex = "1";
_scrollWidth = Math.max(document.body.scrollWidth,document.documentElement.scrollWidth);
_scrollHeight = Math.max(document.body.scrollHeight,document.documentElement.scrollHeight);
// newMask.style.width = _scrollWidth + "px";
// newMask.style.height = _scrollHeight + "px"; 实现全屏遮罩

newMask.style.width = document.body.clientWidth + "px";
newMask.style.height = 200 + "px";

// newMask.style.top = "0px";
//newMask.style.left = "0px";
newMask.style.top = (document.body.scrollTop + document.body.clientHeight / 2 - 200 / 2) + "px";
newMask.style.left = "0px";

newMask.style.background = "#33393C";
newMask.style.filter = "alpha(opacity=40)";
newMask.style.opacity = "0.40";
document.body.appendChild(newMask);

//新弹出层

var newDiv = document.createElement("div");
newDiv.id = _id;
newDiv.style.position = "absolute";
newDiv.style.zIndex = "9999";
newDivWidth = 400;
newDivHeight = 200;
newDiv.style.width = newDivWidth + "px";
newDiv.style.height = newDivHeight + "px";
newDiv.style.top = (document.body.scrollTop + document.body.clientHeight/2 - newDivHeight/2) + "px";
newDiv.style.left = (document.body.scrollLeft + document.body.clientWidth/2 - newDivWidth/2) + "px";
newDiv.style.background = "#EFEFEF";
newDiv.style.border = "1px solid #860001";
newDiv.style.padding = "5px";
newDiv.innerHTML = "弹出层内容 ";

//创建一个图片
var img = document.createElement("img");
img.id = "newimg";
img.style.width = "100px";
img.style.height = "100px";
img.src = "pic325.jpg";
newDiv.appendChild(img);

document.body.appendChild(newDiv);

//弹出层底部居中

function newDivCenter()
{
newDiv.style.top = (document.body.scrollTop + document.body.clientHeight/2 + newDivHeight/2) + "px";
newDiv.style.left = (document.body.scrollLeft + document.body.clientWidth / 2 - newDivWidth / 2) + "px";

//遮罩层也底部居中这样达到可以与弹出层一致的动作
newMask.style.top = (document.body.scrollTop + document.body.clientHeight / 2 + newDivHeight / 2) + "px";
newMask.style.left = "0px";
}
if(document.all)
{
window.attachEvent("onscroll",newDivCenter);
}
else
{
window.addEventListener('scroll',newDivCenter,false);
}

//关闭新图层和mask遮罩层

var newA = document.createElement("a");
newA.href = "#";
newA.innerHTML = "关闭";
newA.onclick = function()
{
if(document.all)
{
window.detachEvent("onscroll",newDivCenter);
}
else
{
window.removeEventListener('scroll',newDivCenter,false);
}
document.body.removeChild(docEle(_id));
document.body.removeChild(docEle(m));
return false;
}
newDiv.appendChild(newA);
}
</script>
<body>
<a onclick="openNewDiv('newDiv');return false;" style="cursor:pointer">显示弹层</a>

</body>

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理光软件研究所户口

理光软件研究所户口

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