Setting a character limit on a React TextBox Component

This knowledge base article explains how to specify the maximum number of characters allowed in the React TextBox component.

Introduction

When designing forms or input fields in a web application, it’s often necessary to restrict the number of characters a user can input. This is particularly useful for fields that require a specific format or length, such as a postal code or a username. In React applications, this can be easily achieved by using the maxLength attribute within the htmlAttributes property of a TextBoxComponent.

Setting the Character Limit

To set a character limit on a TextBoxComponent in React, you can use the htmlAttributes property to pass in the maxLength attribute. The maxLength attribute specifies the maximum number of characters that the user is allowed to enter into the text field. Here’s how you can set a limit of 20 characters:

import React from 'react';
import { TextBoxComponent } from '@syncfusion/ej2-react-inputs';

const App = () => {
  const htmlAttributes = { maxLength: '20' };

  return (
    <textboxcomponent htmlattributes="{htmlAttributes}">
  );
};

export default App;

In the example above, the TextBoxComponent will only allow users to input up to 20 characters, ensuring that the data entered meets the specified requirements.

Example

For a practical demonstration, you can refer to the following sample on StackBlitz, which illustrates how the character limit works in a live environment:

React TextBox with Character Limit Sample

API Reference

For more detailed information on the TextBoxComponent and its properties, consult the official API documentation:

Syncfusion React TextBox API Documentation

Conclusion

Setting a character limit on input fields is a common requirement, and in React, it can be easily implemented using the maxLength attribute within the htmlAttributes property of the TextBoxComponent.

Conclusion
I hope you enjoyed learning about setting a character limit on a TextBox Component.

You can refer to our React TextBox feature tour page to learn about its other groundbreaking feature representations. You can also explore our React TextBox Documentation to understand how to present and manipulate data.

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