Regular expressions, extracting link addresses from Web pages-Regular expressions

<TD class=cate width= "45%" style= "Word-break:break-all" >
<a class=m href= "http://jmfengcai.cn.alibaba.com/athena/companydetail/jmfengcai.html" onmousedown= "return" Aliclick (This, ' alishop=companylistcompanyname '); "target= _blank" class=m> Jiangmen Lianjiang District Feng Cai Craft Factory </a>
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Code as above. I would like to ask how to use regular expressions, "http://jmfengcai.cn.alibaba.com/athena/companydetail/jmfengcai.html" extracted?

Copy Code code as follows:

/(http:\/\/\[^ "']+")/gm

/href *= *[' "]* (\s+) [" ']* */gm

Choose according to different needs.