Question

146

Creating arrays in Javascript

rated 0 times [ 150] [ 4] / answers: 1 / hits: 31480 / 12 Years ago, sat, march 3, 2012, 12:00:00

I am little new to javascript and I am having alittle trouble wrapping my head around making a 2d (or maybe i might need a 3d) array in javascript.

I currently have 2 pieces of information i need to collect: an ID and a value so I created the following:

var myArray = [];



var id = 12;

var value = 44;



myArray[id]=value;

But I realized that this is not easy to loop through the array like a for loop so i was thinking of this:

myArray[myArray.length] = id;

myArray[myArray.length-1][id]=value;

I wanted to do this so that in a for loop i could get the ids and the values easily but the above only returns the value when i loop through it. Any suggestions on how to get this working or is there a better way to do this?

Thanks

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andreguym

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answered 13 Years ago adam · Accepted Answer

Why not use an array of object hashes? This approach allows you to store multiple values in a key:value format:

var myArray = [];

var myElement = {

  id: 12,

  value: 44

}



myArray[0] = myElement;

You could then loop through all of the elements in myArray like so:

var i = 0,

    el;



while (el = myArray[i++]) {

  alert(el.id + '=' + el.value);

}