Question

174

javascript regexp replace not working, but string replace works

rated 0 times [ 180] [ 6] / answers: 1 / hits: 19065 / 13 Years ago, mon, july 11, 2011, 12:00:00

I'm working with jQuery and am trying to write a pattern replace, but it doesn't work. I have this:

var $featured_rewrite = $('#featured').not('.slideshow');

$featured_rewrite.children().attr('href', $featured_rewrite.find('img').attr('src').replace('/-[0-9]+x[0-9]+./i', '.'));

I don't understand why something like this works:

.replace('-500x277.', '.')

but not this, which I even checked with a tool and made sure it was valid and works:

.replace('/-[0-9]+x[0-9]+./i', '.')

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jonrened

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answered 13 Years ago marint · Accepted Answer

'/-[0-9]+x[0-9]+./i' is a string.

/-[0-9]+x[0-9]+./i is regex.

hi.match('/hi/')  // returns null

hi.match(/hi/)    // returns [hi]

Edit: Also, just to be clear, there's nothing wrong with your regex other than the quotes. You may want to consider using /g (i.e. /gi at the end) if you need to replace more than one match, but that's it.