Javascript regex to find a base URL

Question

I\'m going mad with this regex in JS:

var patt1=/^http(s)?:\\/\\/[a-z0-9-]+(.[a-z0-9-]+)*?(:[0-9]+)?(\\/)?$/i;

If I give an input string like \

Answer 1

I'm no javascript pro, but accustomed to perl regexp, so I'll give it a try; the . in the middle of the regexp might need to be escaped, as it can map a / and jinx the whole regexp.

Try this way:

var patt1=/^http(s)?:\/\/[a-z0-9-]+(\.[a-z0-9-]+)*?(:[0-9]+)?(\/)?$/i;