JavaScript验证URL地址的正则
function IsURL(str_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- 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+ "((/?)|" // a slash isn't required if there is no file name+ "(/[0-9a-z_!~*'().;?:@&=+$,%#-]+)+/?)$";var re=new RegExp(strRegex);//re.test()if (re.test(str_url)){return true;}else{return false;}}