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Asked: 2026-06-08T11:29:09+00:00

I have a long string where I need to increment every number within it,

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I have a long string where I need to increment every number within it, leaving the rest of the text as it is.

I’m using this function

newHtml = newHtml.replace(/\d+/, function (val) { return parseInt(val) + 1; });

Which works great on numbers that are in free text but fails when the numbers are surrounded by square brackets. Example:

<input id="Form[0]_Phone" name="Form[0].Phone" type="text" value="">

Needs to become

<input id="Form[1]_Phone" name="Form[1].Phone" type="text" value="">

I’ve used this example to try and help, and I’ve tried a few variations but my regex skills have failed me.

Any assistance much appreciated.

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1 Answer

  1. Editorial Team

    There is nothing in your pattern causing the described behaviour – numbers in square brackets should also be affected. One obvious issue is you’re affecting only the first number found, not all – add the g global flag after the closing forward slash of the pattern.

    Works for me – see this Fiddle: http://jsfiddle.net/ypUmg/

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