[英]React lifecycle method on createElement()
I want to store my components into an array to get further access to methods like addChild
. 我想将组件存储到数组中,以进一步访问诸如addChild
方法。 I can't find a suitable lifecycle method to store the component. 我找不到合适的生命周期方法来存储组件。 Right now I'm abusing the getInitialState
function. 现在,我正在滥用getInitialState
函数。
components = {};
function Component(){
return React.createClass({
getInitialState : function({
components[this.props.id] = {addChild: this.addChild};
return child : [];
}),
addChild(child){
this.state.children.push(child);
this.setState({
children : this.state.children
});
...
});
}
This function triggers only if the component is rendered. 仅在渲染组件时才触发此函数。 Is there a lifecycle function that is executed after the creation of a component with createElement()
? 使用createElement()
创建组件后,是否存在生命周期函数?
Or is there a better way to store the component to get further access to methods? 还是有更好的方法来存储组件以进一步访问方法?
You can get the instance of an element once it is rendered by providing a callback to the ref
property of this element. 通过提供对该元素的ref
属性的回调,可以在呈现该元素后获得该元素的实例。
Here is how you could use it (I assumed you have a JSX and ES6 transpiler): 这是您如何使用它(我假设您有JSX 和ES6转译器):
var instances = {};
const storeInstance = (i) => instances[i.props.id] = i;
var foo1 = (<Hello id="foo1" ref={storeInstance}/>);
var foo2 = (<Hello id="foo2" ref={storeInstance}/>);
var foo3 = (<Hello id="foo3" ref={storeInstance}/>);
Here is a live version . 这是现场版本 。
However, I would advise caution with such method as it can very rapidly become an anti-pattern. 但是,我建议您谨慎使用这种方法,因为它会很快变成反模式。 It is usually easier and more elegant to use the bottom-up re-render React mechanism. 使用自底向上的重新渲染React机制通常更容易,更优雅。 You just update the element's property from its parent and let React do the rest. 您只需从其父元素更新元素的属性,然后让React做其余的事情。
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