Question

I am trying to extract a number from a string with regular expression as I am told this would be the best approach for what I am wanting to do.

Here is the string:

http://domain.com/uploads/2011/09/1142_GF-757-S-white.jpg&h=208&w=347&zc=1&q=90&a=c&s=&f=&cc=&ct=

and I am trying to extract 208 from (height) from the string. so I know I have to look for “&h=” in the expression but I don’t know what to do after that. How can I match between that and the next “&” but not include them as well…

Thanks..

Answer 1

Regular expression to match an h url parameter containing an integer value.

[&?]h=(\d+)

The Javascript:

var match = /[&?]h=(\d+)/.exec(url_string);
alert(match[1]);

Learn more about Regular Expressions.