js 链接地址验证

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)){

console.log("ok");

return (true);

}else{

console.log("k");

return (false);

}

}