Coding⏱️ 2 min read📅 2026-06-02

How to Fix: A component is changing an uncontrolled input of type text to be controlled error in ReactJS

Fix A component is changing an uncontrolled input of t. Use the `value` attribute and update sta. Step-by-step guide included.

Quick Answer: Use the `value` attribute and update state with `onChange` event, or use a controlled component library like Material-UI or React Hook Form

📋 Table of Contents

  1. ⚠️ Fix: Use the `setState` Method
  2. 🔧 Why?
  3. ✨ Wrapping Up

In your code, you are updating the state of `fields` directly without using the `setState` method. This is causing the input element to lose its original uncontrolled behavior and become controlled unexpectedly.

⚠️ Fix: Use the `setState` Method

  • Update the state of `fields` using the `setState` method, like so:

Example:

  1. onChange(field, e) { this.setState({fields: {[field]: e.target.value}}});}

🔧 Why?

By using the `setState` method, you ensure that any changes to the state are handled by React and do not cause unexpected behavior.

✨ Wrapping Up

Make sure to update your code accordingly, and you should no longer receive the warning message about changing an uncontrolled input to a controlled one.

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❓ Frequently Asked Questions

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