September 2018
Intermediate to advanced
302 pages
7h 17m
English
Content preview from Hands-On Design Patterns with React Native
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Uncontrolled input
Uncontrolled input in React Native is not really what it is in web development. In fact, TextInput cannot be uncontrolled entirely. You need to listen to a value change in some way:
- onChangeText fires every time the text input changes
- onSubmitEditing fires when the text input's submit button is pressed
Additionally, TextInput by itself is a controlled component. Check further for an explanation. A long time ago, it used to have a prop called controlled that allowed you to specify a Boolean value, but this has changed. The documentation at that time specified the following:
"If you really want this to behave as a controlled component, you can set this to true, but you will probably see flickering, dropped keystrokes, and/or ...
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