
- Javascript Basics Tutorial
- Javascript - Home
- Javascript - Overview
- Javascript - Syntax
- Javascript - Enabling
- Javascript - Placement
- Javascript - Variables
- Javascript - Operators
- Javascript - If...Else
- Javascript - Switch Case
- Javascript - While Loop
- Javascript - For Loop
- Javascript - For...in
- Javascript - Loop Control
- Javascript - Functions
- Javascript - Events
- Javascript - Cookies
- Javascript - Page Redirect
- Javascript - Dialog Boxes
- Javascript - Void Keyword
- Javascript - Page Printing
- JavaScript Objects
- Javascript - Objects
- Javascript - Number
- Javascript - Boolean
- Javascript - Strings
- Javascript - Arrays
- Javascript - Date
- Javascript - Math
- Javascript - RegExp
- Javascript - HTML DOM
- JavaScript Advanced
- Javascript - Error Handling
- Javascript - Validations
- Javascript - Animation
- Javascript - Multimedia
- Javascript - Debugging
- Javascript - Image Map
- Javascript - Browsers
- JavaScript Useful Resources
- Javascript - Questions And Answers
- Javascript - Quick Guide
- Javascript - Functions
- Javascript - Resources
Finding even length numbers from an array in JavaScript
We are required to write a JavaScript function that takes in an array of Integers as the first and the only argument. The function should then construct and return a new array that contains only those elements from the original array that contains an even number of digits.
For example −
If the input array is −
const arr = [12, 6, 123, 3457, 234, 2];
Then the output should be −
const output = [12, 3457];
Example
The code for this will be −
const arr = [12, 6, 123, 3457, 234, 2]; const findEvenDigitsNumber = (arr = []) => { const res = []; const { length: l } = arr; for(let i = 0; i < l; i++){ const num = Math.abs(arr[i]); const numStr = String(num); if(numStr.length % 2 === 0){ res.push(arr[i]); }; }; return res; }; console.log(findEvenDigitsNumber(arr));
Output
And the output in the console will be −
[12, 3457]
- Related Articles
- Returning an array containing last n even numbers from input array in JavaScript
- Repeating only even numbers inside an array in JavaScript
- Finding matching pair from an array in JavaScript
- Finding missing element in an array of numbers in JavaScript
- How to pull even numbers from an array in MongoDB?
- Finding all possible combinations from an array in JavaScript
- Finding all duplicate numbers in an array with multiple duplicates in JavaScript
- Finding all the longest strings from an array in JavaScript
- Finding the nth missing number from an array JavaScript
- Finding desired numbers in a sorted array in JavaScript
- Finding unlike number in an array - JavaScript
- Odd even sort in an array - JavaScript
- How to Remove Even Numbers from Array in Java?
- C++ code to decrease even numbers in an array
- Finding unique string in an array in JavaScript

Advertisements