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Find The Largest Number in an Array In JavaScript

n this tutorial, you’ll learn how to find the largest number in an array with JavaScript which is a common coding exercise asked at Junior Developer interviews.

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He largest number in an array JavaScript problem isn’t something you’re likely needed to do on a day-to-day basis but it does enforce a few useful techniques and makes you think about how to handle data that is passed in to your programs.

You’ll learn how to write a function that will return the largest number in an array JavaScript which will first off use a loop to go through each of the items in the array comparing each one to a stored highest number.

The program to find the largest number in an array in JavaScript with a for loop will be OK but there is a much easier way of doing it using the JavaScript built in reduce function. So in our example, you’ll learn how to solve the problem of how to get the largest number in an array in JavaScript using these handy built in JavaScript functions.

You’ll also see a lot of coding exercises that focus on arrays inside an array of numbers and you need to work out which is the largest number of the array in JavaScript.

To finish off our tutorial, we’ll look at away of ‘flattening’ these arrays so that we can find the largest number in an array within any sub arrays that might be inside our main array.

Other videos in the JavaScript Snippets series:
Find the largest number in an array JavaScript Tutorial:
How to find the longest word in a String with JavaScript:
How to reverse a String in JavaScript Tutorial:
Javascript String Length: How to determine the size of a string:
JavaScript join method: How to merge arrays into one value:
JavaScript How To Remove An Item From Array Tutorial:
Javascript How To Convert String To Number Tutorial:
JavaScript Create HTML Element: How to dynamically add tags to your pages:
JavaScript String Contains: How to check a string exists in another:
Link JavaScript to HTML: How to run your JavaScript code in the browser:
JavaScript Copy Array: How to make an exact copy of an array in JavaScript:
JavaScript Capitalize First Letter: How to make strings and arrays sentence case:
Javascript Print To Console Tutorial: Different ways to output data to the console:


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