by Sai gowtham

How to get the last digit of a number in JavaScript

In this tutorial, we will learn two different ways to get the last digit of a number in JavaScript.

In JavaScript, strings are the sequence of characters, where the index of the first character is 0, the second character is 1, third character is 3 and last character index is string.length-1 etc.

Get the last digit of a number

To get the last digit of a number, first we need to convert the number to a string and call the slice() method on a string by passing the -1 as an argument. Then convert the string back to a number.

Where negative index -1 is the last character index, same as string.length-1.

Here is an example:

const id = 2345;

const lastDigit = String(id).slice(-1);
console.log(Number(lastDigit));

Output:

5

In the example above, the String() and Number() functions are used to convert the string to a number or vice versa.

Alternatively, we can use the substring() method in JavaScript, to access the last digit of a number in JavaScript.

Here is an example:

const id = 2345;
// conveting the number to string
const strId = String(id);

const lastDigit = strId.substring(strId.length-1);
console.log(Number(lastDigit));

Output:

5

Css Tutorials & Demos

How rotate an image continuously in CSS

In this demo, we are going to learn about how to rotate an image continuously using the css animations.

How to create a Instagram login Page

In this demo, i will show you how to create a instagram login page using html and css.

How to create a pulse animation in CSS

In this demo, i will show you how to create a pulse animation using css.

Creating a snowfall animation using css and JavaScript

In this demo, i will show you how to create a snow fall animation using css and JavaScript.

Top Udemy Courses

JavaScript - The Complete Guide 2022 (Beginner + Advanced)
JavaScript - The Complete Guide 2022 (Beginner + Advanced)
116,648 students enrolled
52 hours of video content
$14.99 FROM UDEMY
React - The Complete Guide (incl Hooks, React Router, Redux)
React - The Complete Guide (incl Hooks, React Router, Redux)
631,582 students enrolled
49 hours of video content
$24.99 FROM UDEMY
Vue - The Complete Guide (w/ Router, Vuex, Composition API)
Vue - The Complete Guide (w/ Router, Vuex, Composition API)
203,937 students enrolled
31.5 hours of video content
$14.99 FROM UDEMY