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Simple absolute positioning and centering sample code for JS pop-up layer_javascript skills

WBOY
WBOYOriginal
2016-05-16 16:59:301825browse
复制代码 代码如下:

function doThis()
{
var a = document.getElementById("addYear");
a.style.left=(document.body.clientWidth/2-a.clientWidth/2) "px";
a.style.top=(document.body.scrollTop document.body.clientHeight/2-a.clientHeight/2) "px";
}
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