ArrayObjects – Akanksha's Blog

Arrays topic in TypeScript is divided into following parts:

Introduction to Arrays
Array Objects
Methods in Arrays – Part 1
Methods in Arrays – Part 2
Methods in Arrays – Part 3
Multidimensional Arrays
Arrays in functions

Array Objects

We can use Array object to create arrays. We can use Array constructor to pass array values. We can pass values in two ways:
– If we pass a numeric value to the constructor, it represents the size of the array
– Multiple values separated by comma represents the elements of the array
Syntax

var arrayName:dataType = new Array();

Below is an example, where we declare an Array object, assign values to it and then retrieve those values. You can use for loop as well to assign value to array.

var num:number[] = new Array(3);
var i:number;
num[0] = 10;
num[1] = 20;
num[2] = 30;
for(i=0;i<num.length;i++){
    console.log(num[i]);
}

Below is the output of above code

Let’s pass element values to Array Constructor.
Below is an example

var num:number[] = new Array(10,20,30);
var i:number;
for(i=0;i<num.length;i++){
    console.log(num[i]);
}

Below is the output of above code