get last string after / in javascript

Get last string after / in JavaScript

If you are working with JavaScript, you may need to extract the last string after a forward slash from a URL or any other string. There are multiple ways to achieve this task in JavaScript. Let's explore them one by one.

Using the split() method

The easiest way to extract the last string after a forward slash is to use the split() method. Here's how you can do it:

let url = 'https://example.com/blog/last-string';
let parts = url.split('/');
let lastPart = parts[parts.length - 1];
console.log(lastPart); // Output: last-string

In this code, we first define a URL and then split it into an array of strings using the forward slash as a separator. We then extract the last element of the array using the index parts.length - 1. This gives us the last string after the forward slash.

Using the substring() method

Another way to extract the last string after a forward slash is to use the substring() method. Here's how you can do it:

let url = 'https://example.com/blog/last-string';
let lastPart = url.substring(url.lastIndexOf('/') + 1);
console.log(lastPart); // Output: last-string

In this code, we first define a URL and then use the lastIndexOf() method to find the index of the last forward slash in the URL. We then add 1 to this index to get the starting index of the last string. Finally, we use the substring() method to extract the last string.

Using the replace() method

You can also use the replace() method to extract the last string after a forward slash. Here's how:

let url = 'https://example.com/blog/last-string';
let lastPart = url.replace(/^.*\/([^/]*)$/, '$1');
console.log(lastPart); // Output: last-string

In this code, we use a regular expression to match the last string after the forward slash. The replace() method replaces the whole URL with the last string using the matched group $1.

Summary

These were some of the ways you can extract the last string after a forward slash in JavaScript. Depending on your use case and preference, you can choose any of these methods.