Capitalize first letter in Javascript

#Javascript

There are many solutions to capitalize the first letter in Javascript and today I’m going to bring you my own.

The idea 💡

We can consider the final string as the addition of the first string character capitalized and the remaining part.
If we take for example the word “chuck”, our transform operation steps are:

• Take the first character and uppercase it: chuck => C
• Take the remaining part: chuck => huck
• Build the final result: C + huck => Chuck

The code ⌨️

let string = 'Chuck';

let firstLetter = string.charAt(0).toUpperCase();
let remainingPart = string.slice(1);
let result = firstLetter + remainingPart;

console.log(result); // Chuck

Compact mode function

function capitalize(str) {
    return str.charAt(0).toUpperCase() + str.slice(1);
}

console.log(capitalize('chuck')); // Chuck

This is just one of the solutions, you can take it as is or find out your own! 😃

Hope you enjoy this post,

Pingu 🐧