<script>
var str = "http://community.csdn.net/Expert/PostNew.asp";
str = str.replace("://","");
var matches = str.match(/\//g);
alert(matches.length);
</script>
var str = "http://community.csdn.net/Expert/PostNew.asp";
str = str.replace("://","");
var matches = str.match(/\//g);
alert(matches.length);
</script>
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