JavaScript Array
Nov 4, 2020
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”] //Orlet 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 //