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Javascript .split() a string for each number of characters

Answer 1

+8 A:

You can try:

var splittedArray = "012345678".match(/.../g);

function tridigit(n) {
    return n.toString().match(/.{1,3}/g);
}

Note that if you prefix a number with a zero, it will be interpreted in octal. Octal literals are officially deprecated, but are supported for the time being. In any case, numbers don't have leading zeros, so it won't appear when you convert the number to a string.

Testing on Safari and FF, numbers with a leading 0 and an 8 or 9 are interpreted in base 10, so octal conversion probably wouldn't be a problem with your specific example, but it would be a problem in the general case.

outis 2009-12-23 15:04:14

Note that this won't work as you expect if the number starts with a zero, as the zero disappears.

Andreas Bonini 2009-12-23 15:05:12

Also, the leading 0 will turn the number into octal.

SLaks 2009-12-23 15:07:45

Oh, I see, any solution for a case that it starts with a 0

adardesign 2009-12-23 15:09:35

Will not work if the number is not a multiplication of 3 (in this case).

KooiInc 2009-12-23 15:12:05

will i have to check if the leading no. is not a 0, and if yes increment it? is that a solution?

adardesign 2009-12-23 15:12:34

@adardesign: Positional number systems have an infinite number of 0 digits running to the left of the numeral. Because they contribute nothing to the value the numeral, they're left out. If you want zeros, you'll have to figure out how many you want to add, because any other way isn't well defined.

outis 2009-12-23 15:14:18

@adardesign: You need to better define what numbers you're working with. Is it just 12345678, or any number?

outis 2009-12-23 15:15:52

it is part of a getRGB("ffffff") function, so i cant know what will be past in.anyway, Thanks.

adardesign 2009-12-23 16:56:03

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Javascript .split() a string for each number of characters

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