List of arrays in Javascript

Starting from:

var firstArray = [1,2,3,4,5,6];
var secondArray = [6,5,4,3,2,1];
var thirdArray = [1,1,1];

You only need create a new array object:

var myListOfArrays = [];

and then, insert all arrays that you want into the new array:

mylistOfArrays.push(firstArray);
mylistOfArrays.push(secondArray);
mylistOfArrays.push(thirdArray);

With push() method the array object is added at end of the new array. This method also returns the new length.

You can visit this reference to get a detailed list of array methods: Array Methods

There are many ways to do this. Try:

var myListofArrays = [];

var firstArray = [1,2,3,4,5,6];
var secondArray = [6,5,4,3,2,1];
var thirdArray = [1,1,1];

myListofArrays.push(firstArray);
myListofArrays.push(secondArray);
myListofArrays.push(thirdArray);

Or a little fancier:

myListofArrays.push(firstArray, secondArray, thirdArray);

Or:

var firstArray = [1,2,3,4,5,6],
    secondArray = [6,5,4,3,2,1],
    thirdArray = [1,1,1],
    myListOfArrays = [firstArray, secondArray, thirdArray];

And there are still probably plenty other valid ways to do this.

Beside Andrew Clavin's answer you can also try this:

var myListofArrays =[];

var firstArray = [1,2,3,4,5,6];
var secondArray = [6,5,4,3,2,1];
var thirdArray = [1,1,1];

myListofArrays[0]=firstArray;
myListofArrays[1]=secondArray;
myListofArrays[2]=thirdArray;

console.log(myListofArrays);

check it in jsFiddle

Hi I think you are almost there.

Try this:

var myListofArrays = [];

You need to declare your variable as an array before you start dumping things in it.

EDIT

If you want to shorten down your code, you could also try this:

var myListofArrays = [];

var firstArray = [1,2,3,4,5,6];
var secondArray = [6,5,4,3,2,1];
var thirdArray = [1,1,1];

myListofArrays = [firstArray, secondArray, thirdArray];

This will push all of your declared arrays into your master array(myListofArrays) and because you declared it as an array at the top, the javascript will understand it is an array and push the rest of the arrays in accordingly.

Since no one mentioned the concat method. Here is my contribution:

var myListofArrays = [];

var firstArray = [1, 2, 3, 4, 5, 6];
var secondArray = [6, 5, 4, 3, 2, 1];
var thirdArray = [1, 1, 1];

function concatAllArrays() {
  for (var i = 0; i < arguments.length; i++) {
    if (!Array.isArray(myListofArrays[i])) {
      myListofArrays[i] = [];
    }
    myListofArrays[i] = myListofArrays[i].concat(arguments[i]);
  }
}

concatAllArrays(firstArray, secondArray, thirdArray);
console.log('My array => ', myListofArrays);