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31

Javascript regex to extract the string before the last backslash

rated 0 times [ 33] [ 2] / answers: 1 / hits: 19922 / 11 Years ago, fri, may 31, 2013, 12:00:00

I am dealing with timezone's in Javascript and I need a regex that will extract everything, but the timezone name from it. For example, I have the timezone America/Argentina/Buenos_Aires. I want to extract the America/Argentina part with a regex. Currently I have this regex: tz.match(/.*?(?=/|$)/i)[0] which extracts everything to the first backslash which works for most timezones (America/Los_Angeles), but not for all of them. How could I edit that regex so that it gets the string before the last value?

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marissatinao

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3 Years ago

answered 11 Years ago grayson · Accepted Answer

I'd personally suggest avoiding regular expressions for something like this, when simple string functions/methods would suffice admirably:

var stringVariable = 'America/Argentina/Buenos_Aires',

    text = stringVariable.substring(0, stringVariable.lastIndexOf('/'));