验证域名url地址function checkUrl(url) { 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- 127.0.0.1 +'([0-9a-z_!~*()-]+.)*'// 域名- www. +'[a...