DEV Community

Cover image for 1 line of code: How to lower case a string
Martin Krause
Martin Krause

Posted on

1 line of code: How to lower case a string

const toLowerCase = str => str.split(" ").map((m) => ${m.charAt(0).toLowerCase()}${m.slice(1)}`).join(" ");
Enter fullscreen mode Exit fullscreen mode

Returns a new string in lower case. Uses spaces as delimiter.

The repository & npm package

You can find the all the utility functions from this series at
The library is also published to npm as @onelinecode for your convenience.

The code and the npm package will be updated every time I publish a new article.

Follow me on Twitter: @martinkr and consider to buy me a coffee

Photo by zoo_monkey on Unsplash

Subscribe to the weekly modern frontend development newsletter

Top comments (1)

kaodik profile image

Sorry, I think I am confused. why not call the toLowerCase() function? str.toLowerCase()?