How to convert a string to camelcase in JavaScript

In this Article we will go through how to convert a string to camelcase only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const toCamelCase = str => str.trim().replace(/[-_\s]+(.)?/g, (_, c) => c ? c.toUpperCase() : '');

toCamelCase('background-color');            // backgroundColor
toCamelCase('-webkit-scrollbar-thumb');     // WebkitScrollbarThumb
toCamelCase('_hello_world');                // HelloWorld
toCamelCase('hello_world');                 // helloWorld