javascript replace query string value

Question

Possible Duplicate:
add or update query string parameter

I am trying to replace the page number in the query string no matter what digit is to 1.

query string

index.php?list&page=2&sort=epub

javascript

window.location.href.replace(new RegExp("/page=.*?&/"), "page=1&")

I was thinking of http://stackoverflow.com/questions/13211588/javascript-replace-and-regex. — Lightness Races in Orbit, Nov 07 '12 at 18:10

score 11 · Answer 1 · answered Nov 07 '12 at 18:01

Your code looks almost right; however:

you need to use either new RegExp or the special // regex syntax, but not both.
the replace method doesn't modify the string in-place, it merely returns a modified copy.
rather than .*?, I think it makes more sense to write \d+; more-precise regexes are generally less likely to go awry in cases you haven't thought of.

So, putting it together:

window.location.href = window.location.href.replace(/page=\d+/, "page=1");

1 Answers1