What is the correct way to use an Array in Javascript?

Question

I'm new to javascript. So this question might not be good.

var arrQue = new Array(10);
  for (var i = 0; i < 10; i++) {
    arrQue[i] = new Array(6);
  }

This code works perfectly but I wanted to know without giving the array size, how can I make something like this (the following code doesn't work):

var arrQue = new Array();//don't know the size
  for (var i = 0; i < arrQue.length; i++) {
    arrQue[i] = new Array();//don't know the size
  }

And also the code contains two times creating new array. Is there easier or best way to do that creating multiple array?

And later I've to access like this:

arrQue[0][6] = "test";
arrQue[23][3] = "some test";

I found this method but think wrong somehow?

Object.size = function(obj) {
    var size = 0, key;
    for (key in obj) {
        if (obj.hasOwnProperty(key)) size++;
    }
    return size;
};

var arrQue = [];
var size = Object.size(arrQue);
for (var i = 0; i < size; i++) {
   arrQue[i] = [];
   var nextSize = Object.size(arrQue[i]);
}

What is the result you want?

xdazz
– xdazz

2014-03-19 09:55:45 +00:00
Commented Mar 19, 2014 at 9:55 — xdazz
– xdazz, Commented Mar 19, 2014 at 9:55
Check the link i have added along with my answer..

Nevin
– Nevin

2014-03-19 09:58:05 +00:00
Commented Mar 19, 2014 at 9:58 — Nevin
– Nevin, Commented Mar 19, 2014 at 9:58
Provide me with an example input, then i can help you out.

Nevin
– Nevin

2014-03-19 10:02:48 +00:00
Commented Mar 19, 2014 at 10:02 — Nevin
– Nevin, Commented Mar 19, 2014 at 10:02

Nevin · Accepted Answer · 2014-03-19 10:00:39Z

4

var arrQue = [];

for (var i = 0; i < length of your inputs; i++) {
    arrQue.push(input);
}

Take a look here

Check out the Array Object Methods there.. that's all the stuff you need.

You can have arrays,arrays of objects... etc..depending upon your requirement.

edited Mar 19, 2014 at 10:00

answered Mar 19, 2014 at 9:54

Nevin

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6 Comments

flagoworld Over a year ago

[] is technically "better" than new Array().

Bhojendra Rauniyar Over a year ago

You're saying the length of your inputs, but I don't know the size exactly.

Nevin Over a year ago

Allright fair enough,how are you inputting? Is it through a click...? or JSON? or... how?

Nevin Over a year ago

What you want is "Dynamically adding values into multidimensional array". stackoverflow.com/questions/10487970/…

Nevin Over a year ago

You have kinda deviated away from the initial question,i suggest you create a new question with proper inputs and what you want as the output. I will be happy to answer it ,if i can.

|

Amila Iddamalgoda · Accepted Answer · 2014-03-19 09:55:58Z

0

var arrQue = [];
for (var i = 0; i < 10; i++) {
    arrQue.push(input);
}

answered Mar 19, 2014 at 9:55

Amila Iddamalgoda

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Comments

Sai Avinash · Accepted Answer · 2014-03-19 09:57:49Z

0

you might be looking for the push method:

var arr = [];
arr.push(your value);

answered Mar 19, 2014 at 9:57

Sai Avinash

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