Today we'll look at a nifty solution to remove all vowels in a string using JavaScript.
The idea is that we get a string and have to return the string without the letters aeiou.
JavaScript remove all vowels
Let's dive right into the solution.
const input = 'daily dev tips';
const removeVowels = input.replace(/[aeiou]/gi, '');
console.log(removeVowels);
// 'dly dv tps'
It works!
And yep that's all the code we need, but let's take a closer look at how it works.
The first part is to use the JavaScript replace function to replace a specific match.
The first part is the match, for which we'll use a regular expression. And the second part is the replacement.
We could, say, replace the letter i with an empty string like this.
const removeVowels = input.replace('i', '');
console.log(removeVowels);
// 'daly dev tips'
However, you'll notice it only replaced the first occurrence. And, of course, we can only target one letter at a time.
So this is where our regular expression comes in.
We start the regular expression by wrapping it in the / / backslashes.
Then we open a pattern matcher with the [] brackets. And in between, we specify which letters should be matched.
The last part is to use gi at the end, which stands for global ignore.
-
globalmeaning to apply it to each occurrence, not just the first one -
ignoremeans to perform a case-insensitive search
And that's it. I hope you learned something about removing vowels with JavaScript.
Thank you for reading, and let's connect!
Thank you for reading my blog. Feel free to subscribe to my email newsletter and connect on Facebook or Twitter
Top comments (5)
This will not remove all vowels - accented vowels will remain - for example in the word café. To make this fully work, you should remove the accents first:
To be fair 'å', 'ä', and 'ö' *technically* aren't accents. 🙃 /j
Ah good point, indeed those are not taking care off in this example :)
What does the
"NFD"in.normalize(...)do?I "know what it does", but when I read it from MDN I don't understand what it means.
Don't forget 'Å', 'Ä', and 'Ö'!