How to use Array.every() method In Javascript
- First, get the array of elements.
- Pass it to an arrow function, which calls every() method on each array element and returns true if each element matches the first element of the array.
Example: This example uses an array.every() method to print the desired response.
let arr = [1, 1, 1, 1];
const allEqual =
arr => arr.every(v => v === arr[0]);
console.log(allEqual(arr));
Output
true
How to check all values of an array are equal or not in JavaScript ?
Ensuring all values in an array are equal is a common task in JavaScript, useful for validating data consistency and simplifying conditional checks. This guide provides an overview of efficient methods to determine if an array contains identical elements.
Below are the approaches used to check if all values of an array are equal or not in JavaScript:
Table of Content
- 1. Using Array.every() method
- 2. Using Array.reduce() method
- 3. Using Set
- 4. Using for…of loop
- 5. Using filter() Method