#26 new
Stephen Elson


Reported by Stephen Elson | July 17th, 2009 @ 01:44 PM | in 2.0

A basic function for outputting a number as a string, such as adding zeros to the start / end (perhaps a better name could be chosen)

Eg, would take 6 and produce "06", or take .3 and produce 00.30.

The amount of padding would obviously be configurable.

Very useful when outputting dates & times.

Comments and changes to this ticket

  • Stephen Elson

    Stephen Elson July 17th, 2009 @ 01:49 PM

    • Milestone changed from 1.6 to 1.7
  • Stephen Elson

    Stephen Elson July 18th, 2009 @ 09:53 AM

    • Tag changed from enhancement to enhancement, lang
    • Title changed from “glow.lang.formatNumber” to “glow.lang.formatNumber()”
  • Stephen Elson

    Stephen Elson July 24th, 2009 @ 02:55 PM

    • Milestone changed from 1.7 to 2.0
  • KushalP

    KushalP June 6th, 2010 @ 11:14 AM

    Surely you're better off creating a leftPad(str, len, char) where you can define the left padding you want by a specific character and then apply it to the formatNumber() case? This was you can use it later on.

  • KushalP

    KushalP June 6th, 2010 @ 11:22 AM

    This is my slightly inelegant implementation:

    function leftPad(num, len, charIn) {
        var numPad = num + '';
        while (numPad.length < len) {
            numPad = charIn + numPad;
        return numPad;
  • Jake Archibald

    Jake Archibald June 7th, 2010 @ 08:30 AM

    Yeah, this ticket is simply for "formatNumber", the implementation may involve creating any number of helper functions which may also be given a public API.

    As you say, leftPad may be useful here, but you'd also need a similar function to operate on the right-hand side of the string, which would need to do rounding as well as padding.

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