从this blog article开始,可以通过以下方式更改组件的呈现:
function iiHOC(WrappedComponent) {
return class Enhancer extends WrappedComponent {
render() {
const elementsTree = super.render()
let newProps = {};
if (elementsTree && elementsTree.type === 'input') {
newProps = {value: 'may the force be with you'}
}
const props = Object.assign({}, elementsTree.props, newProps)
const newElementsTree = React.cloneElement(elementsTree, props, elementsTree.props.children)
return newElementsTree
}
}
}
这似乎仅在传递的组件本身是类组件时才有效。
如何编写相同的代码以使其适用于功能组件?
答案 0 :(得分:0)
我相信你可以直接将包装器中的道具传递给功能组件,如下所示:
const jediEnhancer = (FunctionalComponentToWrap) => {
return class jediEnhancer extends React.Component {
constructor(props){
super(props);
this.state = {
forceIsWithUser: false
};
this.awakenTheForce = this.awakenTheForce.bind(this);
awakenTheForce(){
this.setState({forceIsWithUser: true});
}
render(){
return <FunctionalComponentToWrap awakenTheForce={this.awakenTheForce} {...this.props} />
}
}
}