正则表达式提取图片地址

javascript 版

<script language="javascript">
var a='<P><IMG src="http://bbs.cn.yimg.com/user_img/200701/31/jisuanji986_117025184198149.jpg" mce_src="http://bbs.cn.yimg.com/user_img/200701/31/jisuanji986_117025184198149.jpg"></P><P><IMG src="http://bbs.cn.yimg.com/user_img/200701/31/jisuanji986_1170251841100502.jpg" mce_src="http://bbs.cn.yimg.com/user_img/200701/31/jisuanji986_1170251841100502.jpg"></P>'
var b=/<IMG src=\"([^\"]*?)\">/gi
var s=a.match(b)

 for(var i= 0;i<s.length;i++)
{
alert(s[i]);
alert(RegExp.$1)
}

 
</script>



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<script language="javascript">
var a='<P><IMG src="http://bbs.cn.yimg.com/user_img/200701/31/jisuanji986_117025184198149.jpg" mce_src="http://bbs.cn.yimg.com/user_img/200701/31/jisuanji986_117025184198149.jpg"></P><P><IMG src="http://bbs.cn.yimg.com/user_img/200701/31/jisuanji986_1170251841100502.jpg" mce_src="http://bbs.cn.yimg.com/user_img/200701/31/jisuanji986_1170251841100502.jpg"></P>'
var b=/<IMG src=\"([^\"]*?)\">/gi
var s=a.match(b)

 for(var i= 0;i<s.length;i++)
{
alert(s[i]);
alert(s[i].replace(b,"$1"))
}

 
</script>