怎么获取div中的iframe

2012-10-26

如何获取div中的iframe如divdiv stylewidth: 1058px display: block height: 480pxiframe3/i

如何获取div中的iframe
如
<div>
<div style="width: 1058px; display: block; height: 480px;"><iframe>3</iframe></div>
<div style="width: 1058px; display: block; height: 480px;"><iframe>5</iframe></div>
<div style="width: 1058px; display: none; height: 480px;"><iframe>78</iframe></div>
<div style="width: 1058px; display: block; height: 480px;"><iframe>7</iframe></div>
</div>

如何获取第三个iframe的src

[解决办法]

JScript code

alert(document.getElementsByTagName('div')[2].getElementsByTagName('iframe')[0].src);
[解决办法]
document.getElementsByTagName('div')[2].getElementsByTagName('iframe')[0].src