js里面如何获取网络地址的图片的高度和宽度 (变通办法)

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原图片是 ：<img src=”http://gg.blueidea.com/2008/blueidea/flash2008.gif”>

<div id=”box”></div>

<script language=”javascript”>
(function(){
var img=document.createElement(‘img’);//创建一个img元素
img.src=”http://gg.blueidea.com/2008/blueidea/flash2008.gif”;//指定src
img.style.position=”absolute”;//防止正常的内容变形
img.style.visibility=’hidden’;//藏起来
var inj=document.getElementById(‘box’).appendChild(img);//插入到box中。当然插入到document.body也可以
alert(‘宽：’+inj.offsetWidth);//然后就可以通过 offset 取得宽和高了
alert(‘高：’+inj.offsetHeight);
})();
</script>

简单地说就是把图片放入一个自动伸缩的DIV中，然后获取DIV的宽和高！

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