javascript - validate url without https:// http:// means also can accpet if url is www accpets both (http and www) -

hi trying build regex using javascript url can accepts https:// ( http://) or without http url starts www.

like

http://www.google.com https://www.google.com www.google.com 

here regex

/^(http:\/\/www\.|https:\/\/www\.|http:\/\/|https:\/\/|www\.)[a-z0-9]+([\-\.]{1}[a-z0-9]+)+\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?$/  

but wrong here times accpet not accept

www.abc.com 

it accpets www.acbc ,

 http://www.google  https://www.google 

kindy me out in advance

try this: ((http|ftp|https)://)?([a-za-z0-9\._-]+\.[a-za-z]{2,6})(:[0-9]{1,4})*(/[a-za-z0-9\&%_\./-~-]*)?

update:

if want use in javascript, should be:

var re = /((http|ftp|https):\/\/)?([a-za-z0-9\._-]+\.[a-za-z]{2,6})(:[0-9]{1,4})*(\/[a-za-z0-9\&%_\.\/-~-]*)?/;    console.log(re.test('http://www.google.com'));  console.log(re.test('https://www.google.com'));  console.log(re.test('www.google.com'));  console.log(re.test('google'));

the definition of url board, suppose regular expression can't jobs.