Author -  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``

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