react native typescript
npx react-native init MyApp --template react-native-template-typescriptreact native typescript
npx react-native init MyApp --template react-native-template-typescriptuse propTypes in react function
import React from 'react';
import { PropTypes } from 'prop-types';
const student = (props) => {
return (
<div>
<p>Student Name: {props.name}</p>
<p>Age: {props.age}</p>
</div>
);
};
student.propTypes = {
name: PropTypes.string,
age: PropTypes.number
};
export default student;proptypes oneof
import PropTypes from 'prop-types';
MyComponent.propTypes = {
// You can declare that a prop is a specific JS type. By default, these
// are all optional.
optionalArray: PropTypes.array,
optionalBool: PropTypes.bool,
optionalFunc: PropTypes.func,
optionalNumber: PropTypes.number,
optionalObject: PropTypes.object,
optionalString: PropTypes.string,
optionalSymbol: PropTypes.symbol,
// An object that could be one of many types
optionalUnion: PropTypes.oneOfType([
PropTypes.string,
PropTypes.number,
PropTypes.instanceOf(Message)
])
};react forwardref
const FancyButton = React.forwardRef((props, ref) => (
<button ref={ref} className="FancyButton">
{props.children}
</button>
));
// You can now get a ref directly to the DOM button:
const ref = React.createRef();
<FancyButton ref={ref}>Click me!</FancyButton>;Copyright © 2021 Codeinu
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