How to Build a React Login Page Using Reusable Components

A developer tutorial on DEV Community walks through constructing a login page for a Smart Budget Tracker app using reusable React components. The guide demonstrates how a parent Login component manages form state, validation, and submission logic, while child components like TextInput and Button render purely based on received props. A single handleChange function handles updates for both email and password fields using dynamic key assignment, avoiding the need for separate handlers. The Button component is shown serving dual roles — as a form submit trigger and as a navigation link — illustrating how prop-driven design reduces the need for redundant components. On successful authentication, the user token and details are stored in localStorage and the user is redirected to their dashboard.