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Editorial Team
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Asked: 2026-06-05T12:15:13+00:00

I have to write a few regexes. I did all except the following. I

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I have to write a few regexes. I did all except the following. I don’t know how to add something via regex only.

  • Change this  9/28/2005  to  09.28.2005  (Am able to replace slashes with period but how to add leading zero to 9)

  • Change September 21, 2006 to 21. September 2006 (am able to replace , with . but how to change the order?)

  • Change 5:00 PM to i7:00 Uhr   (12 to 24 hour)?

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  1. Editorial Team

    1st Case (padding with zero):

    result = subject.replace(/\b(\d)(?=[\/.])/ig, "0$1");

    2nd Case (change order):

    result = subject.replace(/\b(january|february|march|april|may|june|july|august|september|october|november|december) +(\d{2}), +(\d{2,4})\b/ig, "$2. $1 $3");

    3rd case (12-24 hr)

    As JavaScript RegEx engine does not support If-Then-Else Conditionals. So, it is hard and time-taking job to create a pure RegEx pattern for that purpose.

    Hope this helps.

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