Javascript Create Array With N Elements

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A JavaScript array is initialized with the given elements except in the case where a single argument is passed to the Array constructor and that argument is a number see the arrayLength parameter below Using an array literal is the easiest way to create a JavaScript Array. Syntax: const array_name = [ item1, item2, ... ]; It is a common practice to declare arrays with the const keyword. Learn more about const with arrays in the chapter: JS Array Const. Example const cars = ["Saab", "Volvo", "BMW"]; Try it Yourself »

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Javascript Create Array With N ElementsMethod 1: Using for Loop We can use for loop to create an array containing numbers from 1 to N in JavaScript. The for loop iterates from 1 to N and pushes each number to an array. Example: Javascript function createArray (N) { let newArr = []; for (let i = 1; i <= N; i++) { newArr.push (i); } return newArr; } let N = 12; let arr = createArray (N); To create an array with N elements containing the same value Use the Array constructor to create an array of N elements Use the fill method to fill the array with a specific value The fill method changes all elements in the array to the supplied value index js const arr Array 3 fill a console log arr

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