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

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

new Array(5).fill(‘element’)<br /> // [“element”, “element”, “element”, “element”, “element”]

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

var arry = [“JavaScript”, “Fill”, “this”, “Array”];<br /> arry.fill(“Filled”, 1, 3);</p> <p>console.log(arry);<br /> //Output: [‘JavaScript’, ‘Filled’, ‘Filled’, ‘Array’]<br />

[1, 2, 3].fill(4) // [4, 4, 4]<br /> [1, 2, 3].fill(4, 1) // [1, 4, 4]<br /> [1, 2, 3].fill(4, 1, 2) // [1, 4, 3]<br /> [1, 2, 3].fill(4, 1, 1) // [1, 2, 3]<br /> [1, 2, 3].fill(4, 3, 3) // [1, 2, 3]<br /> [1, 2, 3].fill(4, -3, -2) // [4, 2, 3]<br /> [1, 2, 3].fill(4, NaN, NaN) // [1, 2, 3]<br /> [1, 2, 3].fill(4, 3, 5) // [1, 2, 3]<br /> Array(3).fill(4) // [4, 4, 4]<br /> [].fill.call({ length: 3 }, 4) // {0: 4, 1: 4, 2: 4, length: 3}</p> <p>// A single object, referenced by each slot of the array:<br /> let arr = Array(3).fill({}) // [{}, {}, {}]<br /> arr[0].hi = “hi” // [{ hi: “hi” }, { hi: “hi” }, { hi: “hi” }]