default props react
// ES6 class
class CatComponent extends React.Component {
constructor(props) {}
render() {
return <div>{this.props.catName} Cat,
Eye Color: {this.props.eyeColor },
Age: {this.props.age}</div>
}
}
CatComponent.defaultProps = {
catName: "Sandy",
eyeColor: "deepblue",
age: "120"
}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)
])
};proptypes
Basic types:
- PropTypes.any: The prop can be of any data type
- PropTypes.bool: The prop should be a Boolean
- PropTypes.number: The prop should be a number
- PropTypes.string: The prop should be a string
- PropTypes.func: The prop should be a function
- PropTypes.array: The prop should be an array
- PropTypes.object: The prop should be an object
- PropTypes.symbol: The prop should be a symbol
Renderable types:
- PropTypes.node: The prop should be anything that can be rendered by React
a number, string, element, or array (or fragment) containing these types
- PropTypes.element: The prop should be a React element
Instance types:
- PropTypes.instanceOf(class): The prop should be an instance of class
Multiple types:
- PropTypes.oneOf: The prop is limited to a specified set of values,
treating it like an enum
- PropTypes.oneOfType: The prop should be one of a specified set of
types, behaving like a union of types
Collection types:
- PropTypes.arrayOf: ensures that the prop is an array in which all
items match the specified type.
- PropTypes.objectOf: ensures that the prop is an object in which all
property values match the specified type.
- PropTypes.shape: ensures that the prop is an object that contains a set
of specified keys with values of the specified types.
- PropTypes.exact: use for strict (or exact) object matchingCopyright © 2021 Codeinu
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