𝗥𝗲𝗮𝗰𝘁 𝗙𝗼𝗿𝗺 𝗖𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁 𝗕𝘂𝗶𝗹𝗱 𝗚𝘂𝗶𝗱𝗲

𝗥𝗲𝗮𝗰𝘁 𝗙𝗼𝗿𝗺 𝗖𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁 𝗕𝘂𝗶𝗹𝗱 𝗚𝘂𝗶𝗱𝗲

Building forms in React requires careful state management. This guide shows you how to build a registration form from scratch.

You will learn four main concepts:

• State Management Store all form fields in one state object. Use the useState hook to keep track of name, age, email, and password.

• Handling Inputs Use one function to manage all input changes. You update the state by spreading the old data and adding the new value based on the input name.

• Form Validation Check if all fields contain data before submission. Show an alert if any field is empty.

• Keyboard Support Add a listener for the Enter key. This lets users submit the form without clicking the button.

Code Example:

import { useState } from "react";

function FormValidation() { const [userdata, setUserdata] = useState({ name: "", age: "", mobile: "", email: "", dob: "", password: "" });

function getdata(e) { const { name, value } = e.target; setUserdata({ ...userdata, [name]: value }); }

function validate() { const { name, age, mobile, email, dob, password } = userdata; if (name && age && mobile && email && dob && password) { alert("Submitted successfully"); } else { alert("Please fill all fields"); } }

function handlekey(e) { if (e.key === "Enter") { validate(); } }

return (

Submit

); }

Source: https://dev.to/jayashree_a84b6eff7bc414e/react-form-component-blog-explanation-with-code-3enh