Endswith In Javascript

Have you ever found yourself in a situation where you needed to check if a string ends with a specific sequence of characters in JavaScript? Well, fret not because the `endsWith` method in JavaScript is here to save the day! In this article, we will explore how you can use this handy method to easily determine if a string ends with a particular substring.

The `endsWith` method in JavaScript is a built-in function that allows you to check if a string ends with a specified substring. This method returns `true` if the string ends with the characters provided, otherwise it returns `false`. Let's dive into some practical examples to see how you can leverage this functionality in your coding endeavors.

To use the `endsWith` method, simply call it on a string and pass the target substring you want to check for as an argument. Here's a basic example to illustrate this:

const myString = 'Hello, world!';
const endsWithWorld = myString.endsWith('world!');
console.log(endsWithWorld); // Output: true

In this example, we have a string `myString` containing the phrase "Hello, world!". By calling the `endsWith` method on `myString` with the argument `'world!'`, we successfully determine that the string ends with 'world!', which results in the boolean value `true`.

One of the key advantages of using the `endsWith` method is that it is case-sensitive. This means that the method distinguishes between uppercase and lowercase characters. Let's see this in action with another example:

const myString = 'Tech is awesome';
const endsWithAwesome = myString.endsWith('awesome');
console.log(endsWithAwesome); // Output: false

In this case, since the substring we are checking for is in lowercase ('awesome'), the method returns `false` because the original string ends with 'awesome' in uppercase.

Additionally, you can specify an optional parameter to restrict the check to a specific portion of the string. By passing a second argument to the `endsWith` method, you can define the length of the string to be considered. Take a look at this example:

const myString = 'JavaScript is fun!';
const endsWithScript = myString.endsWith('Script', 10);
console.log(endsWithScript); // Output: true

In this snippet, we are checking if the substring 'Script' appears at the end of the string `myString`, considering only the first 10 characters. The method returns `true` because the string 'Script' is found within the specified length limit.

In conclusion, the `endsWith` method in JavaScript provides a simple yet powerful way to check if a string ends with a specific substring. Whether you need to validate file extensions, identify keywords, or perform any other string manipulation task, this method can be a valuable tool in your coding toolkit. So, next time you find yourself needing to verify the end of a string, remember to give `endsWith` a try!