In this lesson, you'll learn about reversing, repeating, and trimming strings in JavaScript, which are useful operations for manipulating text.

Reverse, Repeat, & Trim a String

Let's explore how to perform these common string operations.

Reverse

There isn't a built-in string method that reverses a string directly. However, we can use the knowledge we've previously gained! Remember how we can split a string into an array of characters ? Arrays have a method.

Here's the process:

• Split the string into an array of characters.
• Reverse the newly created array.
• Join the array back into a string.

const exampleString = 'test';

const reversedString = exampleString.split('').reverse().join('');
console.log(reversedString); // "tset"

Repeat

If you want to repeat a string a certain number of times, you can easily do that using the method.

const dogSays = 'woof';

console.log(dogSays.repeat(5)); // "woofwoofwoofwoofwoof"

Trim

Sometimes, users might accidentally add extra spaces to their input, such as emails or usernames. We can clean these empty spaces using the method.

const str = "       Hello World!        ";

console.log(str.trim()); // "Hello World!"

These string operations are powerful tools for text manipulation in JavaScript, helping you clean, format, and transform strings as needed.

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