How To Get The Last Part Of A String In Javascript

When working with strings in JavaScript, it's common to need to extract certain parts for specific tasks. One frequent requirement is to get the last part of a string. In this article, we'll explore some simple yet powerful ways to achieve this using JavaScript.

Using Substring:
JavaScript provides us with the `substring()` method, which allows us to extract a portion of a string based on the start and end index positions. To get the last part of a string using `substring()`, we need to know the length of the string and the length of the substring we want to extract. Let's take a look at an example:

let fullString = "Hello, World!";
let lastPart = fullString.substring(fullString.length - 6);
console.log(lastPart);

In the example above, we are extracting the last 6 characters of the `fullString`. By specifying the start index as `fullString.length - 6`, we effectively capture the last part of the string.

Using Substr:
Another method that we can use to extract the last part of a string is `substr()`. The `substr()` method takes two parameters: the starting index and the length of the substring. Here's how you can use `substr()`:

let fullString = "Tech Reporter";
let lastPart = fullString.substr(fullString.length - 8);
console.log(lastPart);

In this example, we are extracting the last 8 characters of the `fullString` by specifying the starting index as `fullString.length - 8`.

Using Slice:
The `slice()` method is also handy for extracting parts of a string in JavaScript. It works similarly to `substring()` but allows for negative index values to make it easier to extract the last part of a string. Let's see how we can use `slice()`:

let fullString = "JavaScript Guide";
let lastPart = fullString.slice(-5);
console.log(lastPart);

By passing a negative value to `slice()`, we start from the end of the string and extract the last 5 characters.

Conclusion:
In conclusion, extracting the last part of a string in JavaScript is a common task that can be accomplished efficiently using methods like `substring()`, `substr()`, and `slice()`. These methods provide flexibility in selecting the desired portion of a string based on the length or starting index. By mastering these techniques, you can enhance your string manipulation skills and handle various scenarios where extracting the last part of a string is necessary.

Feel free to experiment with these methods and incorporate them into your JavaScript projects to enhance your coding abilities. With practice, you'll become more proficient in working with strings and leveraging JavaScript's powerful features for efficient string manipulation.