Developer Tools

Developer Tools

Validating Matching Passwords With Vanilla JavaScript

The native Constraint Validation API — setCustomValidity() specifically — lets a browser show its own built-in validation message for a custom check like password matching, without a framework.

Developer Tools

Arrow Functions in JavaScript (ES6)

Shorter syntax is the visible part — the change that actually matters is how arrow functions handle this, which is what makes them the right (and sometimes wrong) choice in specific situations.