react-native/docs/HandlingTextInput.md

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---
id: handling-text-input
title: Handling Text Input
layout: docs
category: The Basics
permalink: docs/handling-text-input.html
next: handling-touches
previous: flexbox
---
[`TextInput`](docs/textinput.html#content) is a basic component that allows the user to enter text. It has an `onChangeText` prop that takes
a function to be called every time the text changed, and an `onSubmitEditing` prop that takes a function to be called when the text is submitted.
For example, let's say that as the user types, you're translating their words into a different language. In this new language, every single word is written the same way: 🍕. So the sentence "Hello there Bob" would be translated
as "🍕🍕🍕".
```ReactNativeWebPlayer
import React, { Component } from 'react';
import { AppRegistry, Text, TextInput, View } from 'react-native';
export default class PizzaTranslator extends Component {
constructor(props) {
super(props);
this.state = {text: ''};
}
render() {
return (
<View style={{padding: 10}}>
<TextInput
style={{height: 40}}
placeholder="Type here to translate!"
onChangeText={(text) => this.setState({text})}
/>
<Text style={{padding: 10, fontSize: 42}}>
{this.state.text.split(' ').map((word) => word && '🍕').join(' ')}
</Text>
</View>
);
}
}
// skip this line if using Create React Native App
AppRegistry.registerComponent('AwesomeProject', () => PizzaTranslator);
```
In this example, we store `text` in the state, because it changes over time.
There are a lot more things you might want to do with a text input. For example, you could validate the text inside while the user types. For more detailed examples, see the [React docs on controlled components](https://facebook.github.io/react/docs/forms.html), or the [reference docs for TextInput](docs/textinput.html).
Text input is one of the ways the user interacts with the app. Next, let's look at another type of input and [learn how to handle touches](docs/handling-touches.html).