Question

How to create an array containing a range of numbers in JavaScript

Answer 1

function createRangeArray(start, end) {
    let arr = [];
    for (let i = start; i <= end; i++) {
        arr.push(i);
    }
    
    return arr;
}

let start = 3;
let end = 11;
let rangeArray = createRangeArray(start, end);

console.log(rangeArray);

 
 
/*
run:
 
[
  3, 4,  5,  6, 7,
  8, 9, 10, 11
]
 
*/

 

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Answer 2

function createRangeArray(start, end) {
    return Array.from({ length: end - start + 1 }, (_, i) => start + i);
}

let start = 3;
let end = 11;
let rangeArray = createRangeArray(start, end);

console.log(rangeArray);

 
 
/*
run:
 
[
  3, 4,  5,  6, 7,
  8, 9, 10, 11
]
 
*/

 

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