Javascript creating array of arrays runtime

Question

How to best create this in runtime?

var fields = ["abc", "def", "somepar", "otherpar"];
var toSet = "foo";
// How to genereate this variable from code
var valuepairs = [["Progress", progress], [fields[0], toSet], [fields[1], toSet], [fields[2], toSet]]; // [fields[n], toSet]

Regards

Larsi

What are you asking here? The code you gave here is completely valid. How do you need to use it? — picardo
– picardo, Commented Mar 14, 2011 at 10:29
@picardo: Seems pretty clear. He gives the inputs and asks how to programmatically generate the given output. — Lightness Races in Orbit
– Lightness Races in Orbit, Commented Mar 14, 2011 at 12:21

kennytm · Accepted Answer · 2011-03-14 10:26:23Z

1

Use the .push method to append to an array...

var valuepairs = [["Progress", progress]];
for (var k = 0; k < fields.length; ++ k)
   valuepairs.push([fields[k], toSet]);

answered Mar 14, 2011 at 10:26

kennytm

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2 Comments

Larsi Over a year ago

Thanks, that was just the function I was looking for

Lightness Races in Orbit Over a year ago

@Larsi: fyi valuepairs[valuepairs.length] = [fields[k], toSet]; works too, not that I'm particularly advocating it over this solution.

Nir Levy · Accepted Answer · 2011-03-14 10:30:33Z

0

var valuepairs = new Array(new Array('progress',progress)); //first line is hardcoded...
for (var i=0; i<fields.length; i++) {
   valuepairs.push(new Array(fields[i],toSet));
}

answered Mar 14, 2011 at 10:30

Nir Levy

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2 Comments

Larsi Over a year ago

Sorry I was a bit late accepting, but Kenny was first, so I'll accept his answer. Thanks for your time!

Nir Levy Over a year ago

Thanks Larsi. I am not here for the reps, just for fun. Good luck.

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