JavaScript Array

In this article I show some operation with array like create array, array length find out, get array’s all value .

Create an Array:

Example:

let array = new Array();
array[0] = ‘A’
array[1] = ‘B’
array[2] = ‘C’
console.log(array); // output:_ Array [“A”, “B”, “C”] //
Or
let array = [‘A’, ‘B’, ‘C’];
console.log(array); // output:_ Array [“A”, “B”, “C”] //

Find Array’s length:

let array = [‘A’, ‘B’, ‘C’];
console.log(“Array’s length” + array.length); // output:_ Array’s length 3 //

Add new item or remove item from an Array:

Add item:

let array = [‘A’, ‘B’, ‘C’];
array.push(‘D’)
console.log(array); // output:_ Array [“A”, “B”, “C”, “D”] //

Remove Item:

let array = [‘A’, ‘B’, ‘C’, ‘D’];
console.log(array.pop()); // output:_ Array [“A”, “B”, “C”] //

Get values form an array:

single values:

let arraysObj = [{name: ‘A’},{name: ‘B’},{name: ‘C’},{name: ‘D’}]
console.log(arraysObj[1].name)) // output:_ B //

all values:

let arraysObj = [{name: ‘A’},{name: ‘B’},{name: ‘C’},{name: ‘D’}]
console.log(arraysObj.map(obj = obj.name)) // output:_ A, B, C, D //