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How to Capitalize Words in JavaScript

Learn how to capitalize word in JavaScript the easy way. JavaScript capitalize code snippet and helper

Created on Oct 23, 2021


To capitalize string in Javascript you can make use of the toUpperCase on the first letter then continue slicing through the string. To ease the process below is the "capitalize" that's attached to the "String prototype" in JavaScript.
/* add string capitalize helper */
Object.defineProperty(String.prototype, 'capitalize', {
    value: function() {
        return this.charAt(0).toUpperCase() + this.slice(1);
    enumerable: false

JavaScript Capitalize Helper Function

To make use of the code above you can now call the "capitalize()" function after defining the string.
"hello world".capitalize() // Hello world

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