比较强大的匹配URL的正则表达式

var strRegex = "^((https|http|ftp|rtsp|mms)?://)" + "?(([0-9a-z_!~*'().&=+$%-]+: )?[0-9a-z_!~*'().&=+$%-]+@)?" //ftp的user@ + "(([0-9]{1,3}/.){3}[0-9]{1,3}" // IP形式的URL- 199.194.52.184 + "|" // 允许IP和DOMAIN（域名） + "([0-9a-z_!~*'()-]+/.)*" // 域名- www. + "([0-9a-z][0-9a-z-]{0,61})?[0-9a-z]/." // 二级域名 + "[a-z]{2,6})" // first level domain- .com or .museum + "(:[0-9]{1,4})?" // 端口- :80 + "/$" //end with the / //+ "((/?)|" // a slash isn't required if there is no file name //+ "(/[0-9a-z_!~*'().;?:@&=+$,%#-]+)+/?)$"; var reg=new RegExp(strRegex); if(!reg.test(jforumUrl.val())) { alert("URL匹配失败，请以http://开头,以/结尾!"); return false; }