Javascript 错误:操作必须是普通对象。使用自定义中间件进行异步操作。反应重复错误
index.jsJavascript 错误:操作必须是普通对象。使用自定义中间件进行异步操作。反应重复错误,javascript,reactjs,redux,react-redux,Javascript,Reactjs,Redux,React Redux,index.js import store from "./store"; import { createStore } from 'redux'; import reducers from './reducers'; import { Provider } from 'react-redux'; console.log('init state', store.getState()); ReactDOM.render( <Provider store={ store
import store from "./store";
import { createStore } from 'redux';
import reducers from './reducers';
import { Provider } from 'react-redux';
console.log('init state', store.getState());
ReactDOM.render(
<Provider store={ store }>
<App />
</Provider>,
document.getElementById('root')
);
registerServiceWorker();
import * as types from "./types";
import axios from 'axios';
import { incrementProgress, decrementProgress } from "./progress";
const userLogin = username => ({
type: types.AUTH_LOGIN,
username,
});
const userLogout = () => ({
type: types.AUTH_LOGOUT,
});
const fakeLoginRequest = (username, password) => {
alert(username, password)
}
export const doLogin = username => {
alert(username)
};
export const doLogout = () => dispatch => {
dispatch(userLogout());
};
LoginForm.jsx-哑组件
class LoginForm extends React.Component {
constructor(props) {
super(props);
this.state = {
username: '',
password: '',
};
this.handleClick = this.handleClick.bind(this);
}
fakeLogin = e => {
const { username } = this.state;
e.preventDefault();
if (!username) {
return alert("Provide a username.");
}
this.props.doLogin(username);
this.setState({ username: "" });
};
render() {
return (
<div>
<MuiThemeProvider>
<div>
<TextField
hintText="Enter your Username"
floatingLabelText="Username"
onChange = {(event,newValue) => this.setState({username:newValue})}
/>
<br/>
<TextField
type="password"
hintText="Enter your Password"
floatingLabelText="Password"
onChange = {(event,newValue) => this.setState({password:newValue})}
/>
<br/>
<RaisedButton label="Submit" primary={true} style={style} onClick={this.fakeLogin}/>
</div>
</MuiThemeProvider>
</div>
);
}
}
export default LoginForm;
const LoginPage = ({ auth, doLogin, doLogout }) => (
<div>
<NavBar/>
<div className="row">
<div style={{display: 'flex', justifyContent: 'center'}} className="col-md-4 col-md-offset-4">
<LoginForm doLogin={doLogin} doLogout={doLogout} auth={auth} />
</div>
</div>
</div>
);
const mapStateToProps = state => ({
auth: state.auth,
});
export default connect(mapStateToProps, { doLogin, doLogout })(LoginPage);
类LoginForm扩展了React.Component{
建造师(道具){
超级(道具);
此.state={
用户名:“”,
密码:“”,
};
this.handleClick=this.handleClick.bind(this);
}
fakeLogin=e=>{
const{username}=this.state;
e、 预防默认值();
如果(!用户名){
返回警报(“提供用户名”);
}
this.props.doLogin(用户名);
this.setState({username:});
};
render(){
返回(
this.setState({username:newValue})}
/>
this.setState({password:newValue})}
/>
);
}
}
导出默认登录信息;
LoginPage.jsx-Wise组件
class LoginForm extends React.Component {
constructor(props) {
super(props);
this.state = {
username: '',
password: '',
};
this.handleClick = this.handleClick.bind(this);
}
fakeLogin = e => {
const { username } = this.state;
e.preventDefault();
if (!username) {
return alert("Provide a username.");
}
this.props.doLogin(username);
this.setState({ username: "" });
};
render() {
return (
<div>
<MuiThemeProvider>
<div>
<TextField
hintText="Enter your Username"
floatingLabelText="Username"
onChange = {(event,newValue) => this.setState({username:newValue})}
/>
<br/>
<TextField
type="password"
hintText="Enter your Password"
floatingLabelText="Password"
onChange = {(event,newValue) => this.setState({password:newValue})}
/>
<br/>
<RaisedButton label="Submit" primary={true} style={style} onClick={this.fakeLogin}/>
</div>
</MuiThemeProvider>
</div>
);
}
}
export default LoginForm;
const LoginPage = ({ auth, doLogin, doLogout }) => (
<div>
<NavBar/>
<div className="row">
<div style={{display: 'flex', justifyContent: 'center'}} className="col-md-4 col-md-offset-4">
<LoginForm doLogin={doLogin} doLogout={doLogout} auth={auth} />
</div>
</div>
</div>
);
const mapStateToProps = state => ({
auth: state.auth,
});
export default connect(mapStateToProps, { doLogin, doLogout })(LoginPage);
constloginpage=({auth,doLogin,doLogout})=>(
);
常量mapStateToProps=状态=>({
auth:state.auth,
});
导出默认连接(mapstatetops,{doLogin,doLogout})(LoginPage);
我对react redux完全是新手,我正在尝试创建一个识别用户当前登录状态的流。我试图使用上述代码来确保用户名
和密码
正确通过并发出警报
然而,我得到了错误
错误:操作必须是普通对象。使用自定义中间件进行异步操作。React redux错误。
在this.props.doLogin(用户名)上。它似乎也与按钮的onClick
有关。我不明白,因为我调用的函数不是异步的
我做错了什么?正如错误所说,您的动作创建者必须返回一个对象
export const doLogin = username => {
console.log('READ THE DOCS. IT IS VERY HELPFUL TO READ THE DOCS.');
console.log(username);
return {
type: 'YOUR_ACTION_TYPE',
payload: { whatever: 'you', want: 'it', to: 'be' }
};
};
正如错误所说,动作创建者必须返回一个对象
export const doLogin = username => {
console.log('READ THE DOCS. IT IS VERY HELPFUL TO READ THE DOCS.');
console.log(username);
return {
type: 'YOUR_ACTION_TYPE',
payload: { whatever: 'you', want: 'it', to: 'be' }
};
};
payload
到底指的是什么?它只是数据。它不需要被调用有效负载
。它只是一个JS对象。你可以用它做任何你喜欢的事。世界就是你的牡蛎。丹·阿布拉莫夫(Dan Abramov)在Redux网站上写了一些很棒的教程(就在文档旁边),值得你花一些时间。payload
到底指的是什么?它只是数据。它不需要被调用有效负载
。它只是一个JS对象。你可以用它做任何你喜欢的事。世界就是你的牡蛎。丹·阿布拉莫夫(Dan Abramov)在Redux网站上写了一些很棒的教程(就在文档旁边),值得你花一些时间。