How to Strip Whitespace from JavaScript Strings

When you have strings in JavaScript, sometimes those strings will come with whitespace, which is just extra characters like spaces, tabs, and newlines.

When you want to get rid of these, you will need to strip them out.

In this post, we will look at how to strip whitespace from strings.

Strip Whitespace from Strings

When you want to strip whitespace from a string, you can use the trim() method. This method lives natively on the String object.

The trim() method will remove all whitespace from the beginning and end of the string.

Let's see an example of this.

	const string = "   Hello World!   ";
string.trim(); // "Hello World!"

Keep in mind that the trim() method will only remove whitespace from the beginning and end of the string. It will not remove whitespace from the middle of the string.

	const string = "   Hello     World!   ";
string.trim(); // "Hello     World!"

If you want to remove all spaces you can split the string into an array and then join it back together.

	const string = "   Hello     World!   ";
string.split(" ").join(""); // "HelloWorld!"

Another way you can remove all spaces is to use the replaceAll() method.

	const string = "   Hello     World!   ";
string.replaceAll(" ", ""); // "HelloWorld!"

Conclusion

In this post, we've taken a look at all the ways you can strip whitespace from strings.

You have several options, including using the trim() method, splitting the string into an array and then joining it back together, and the replaceAll() method.

Hopefully, you've found this post useful. Happy coding!

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