我不应该这样做的唯一原因是让反应更新视图。 https://facebook.github.io/react/docs/state-and-lifecycle.html#using-state-correctly
但似乎MobX反应为我做这些肮脏的工作。我只需要将this.state
标记为可观察,并且一切都按预期工作。有什么缺点吗?我不想把所有的州都放进一家大商店。当使用React with MobX时,可以直接修改状态吗?
代码:
const {observable, computed} = mobx;
const {observer} = mobxReact;
const {Component} = React;
@observer
class Form extends React.Component{
@observable state = {
username: '',
password: '',
};
constructor(...args) {
super(...args);
this.handleSubmit = this.handleSubmit.bind(this)
}
render() {
return <form onSubmit={this.handleSubmit}>
<label>
Name:
<input type="text" value={this.state.username} onChange={event => this.state.username = event.target.value} />
</label>
<div>username: {this.state.username}</div>
<input type="submit" value="Submit" />
</form>;
}
handleSubmit(event: Event) {
event.preventDefault();
console.log(this.state.username);
}
}
ReactDOM.render(
<div>
<Form />
<mobxDevtools.default />
</div>
, document.getElementById('mount'));
所以,'setState'做无非安排VDOM差异吗? – Zen
@Zen它将输入合并到实际状态后这样做。 – aitchnyu