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

• picardo: What are you asking here? The code you gave here is completely valid. How do you need to use it?
• Lightness Races in Orbit: @picardo: Seems pretty clear. He gives the inputs and asks how to programmatically generate the given output.

Answer 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]);

• Larsi: Thanks, that was just the function I was looking for
• Lightness Races in Orbit: @Larsi: fyi valuepairs[valuepairs.length] = [fields[k], toSet]; works too, not that I'm particularly advocating it over this solution.

Answer 2

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));
}

• Larsi: Sorry I was a bit late accepting, but Kenny was first, so I'll accept his answer. Thanks for your time!
• Nir Levy: Thanks Larsi. I am not here for the reps, just for fun. Good luck.