我被困在我的简单 infernojs v1.2.2 应用程序中以将数据传递给父组件,这个问题可能与打字稿有关,因为我得到了一些错误的打字稿而不是(它有问题)识别来自父组件的道具。)
我尝试给我的子组件回调以便稍后调用它,但是我的上下文不好。我的工作确实让我甚至没有触发onInput。
这是我的父组件
import { linkEvent } from 'inferno';
import Component from 'inferno-component';
import Weight from './weight';
export class RatioAlcohol extends Component<Props, any> {
constructor(props, context) {
super(props, context);
this.state = { weight: 65 };
}
setChangeWeight(instance, event) {
instance.setState({ weight: event.target.value });
}
render(props){
return (
<div className="ratio-alcohol">
<Weight valueChanged={ linkEvent(this, this.setChangeWeight) } weight={ this.state.weight } />
</div>
);
}
}
还有我的孩子组件:
import { linkEvent } from 'inferno';
import Component from 'inferno-component';
export default class Weight extends Component<Props, any> {
constructor(props, context) {
super(props, context);
this.state = { weight: props.weight};
}
handleChangeWeight(instance, event) {
instance.valueChanged.event();
}
render(props){
return (
<div className="weight">
<label for="WeightInput">What is your weight(Kg)?</label>
<input id="WeightInput" name="weight" type="number" value={ props.weight } onInput={ linkEvent(props, this.handleChangeWeight) } />
</div>
);
}
}
我没有在inferno文档中找到父/子组件交互的例子,我没有React的经验,我觉得我可以从React app得到答案,但暂时没有得到它。
我使用了inferno-typescript-example作为我项目的基础,我不知道这个问题是否重要。
答案 0 :(得分:1)
因此handleChangeWeight
中的Weight
函数签名具有第1个参数作为实例,它实际上是您的组件的props
。它应该像
export default class Weight extends Component<Props, any> {
constructor(props, context) {
super(props, context);
this.state = { weight: props.weight};
}
handleChangeWeight(props, event) {
props.valueChanged(event);
}
render(props){
return (
<div className="weight">
<label for="WeightInput">What is your weight(Kg)?</label>
<input id="WeightInput" name="weight" type="number" value={ props.weight } onInput={ linkEvent(props, this.handleChangeWeight) } />
</div>
);
}
}
并且在RatioAlcohol中你不必链接事件,而是如果你需要访问实例,你必须绑定你的处理程序
export class RatioAlcohol extends Component<Props, any> {
constructor(props, context) {
super(props, context);
this.state = { weight: 65 };
this.setChangeWeight = this.setChangeWeight.bind(this)
}
setChangeWeight(event) {
this.setState({ weight: event.target.value });
}
render(props){
return (
<div className="ratio-alcohol">
<Weight valueChanged={ this.setChangeWeight } weight={ this.state.weight } />
</div>
);
}
}