JAVASCRIPT

javascript fill array

const fill = new Array(5).fill(0)
console.log(fill) // [ 0,0,0,0,0]

JavaScript .Fill

const array1 = [1, 2, 3, 4];

// fill with 0 from position 2 until position 4
console.log(array1.fill(0, 2, 4));
// expected output: [1, 2, 0, 0]

// fill with 5 from position 1
console.log(array1.fill(5, 1));
// expected output: [1, 5, 5, 5]

console.log(array1.fill(6));
// expected output: [6, 6, 6, 6]

fill array with values javascript

let filledArray = new Array(10).fill({'hello':'goodbye'});

create and fill array javascript

Array.from({length: 3}, (_, i) => i); //[0,1,2]
[...Array(3)].map((_, i) => i);      //[0,1,2]

array fill

new Array(5).fill('element')
// ["element", "element", "element", "element", "element"]

fill array javascript

[1, 2, 3].fill(4)                // [4, 4, 4]
[1, 2, 3].fill(4, 1)             // [1, 4, 4]
[1, 2, 3].fill(4, 1, 2)          // [1, 4, 3]
[1, 2, 3].fill(4, 1, 1)          // [1, 2, 3]
[1, 2, 3].fill(4, 3, 3)          // [1, 2, 3]
[1, 2, 3].fill(4, -3, -2)        // [4, 2, 3]
[1, 2, 3].fill(4, NaN, NaN)      // [1, 2, 3]
[1, 2, 3].fill(4, 3, 5)          // [1, 2, 3]
Array(3).fill(4)                 // [4, 4, 4]
[].fill.call({ length: 3 }, 4)   // {0: 4, 1: 4, 2: 4, length: 3}

// A single object, referenced by each slot of the array:
let arr = Array(3).fill({}) // [{}, {}, {}]
arr[0].hi = "hi"            // [{ hi: "hi" }, { hi: "hi" }, { hi: "hi" }]

array.fill() in javascript

var arry = ["JavaScript", "Fill", "this", "Array"];
arry.fill("Filled", 1, 3);

console.log(arry);
//Output: [‘JavaScript’, ‘Filled’, ‘Filled’, 'Array’]

fill array with array javascript

var arr =[1,2,3,4,5,6,7,8]
const bucket = new Array(arr.length + 1).fill()
    .map(() => []);

/** 
[
  [], [], [], [], [],
  [], [], [], []
]


**/