我正在尝试创建一个使用 React Hooks 的 React 应用程序。 在登录表单中,当用户提交表单时,电子邮件和密码将传递给 handleClick 函数。 该函数从服务器获取数据并显示在客户端,但响应始终未定义并且在从服务返回之前被调用。 这是代码...
登录.js
import React, { useState, useEffect } from 'react';
import { Button, Form, Container, Row, Col } from 'react-bootstrap';
import './login.css'
import * as services from '../services'
function Login() {
const [email, setEmail] = useState('');
const [password, setPassword] = useState('');
const handleClick = async(e) => {
e.preventDefault();
console.log(email, password);
let res = await services.login(email, password);
console.log(res);
}
return (
<Container>
<Row className="justify-content-md-center ">
<header><h2>Rao infotech workspace</h2></header>
</Row>
<Row className="justify-content-md-center form">
<Col md="auto">
<Form onSubmit={handleClick}>
<Form.Group controlId="formBasicEmail">
<Form.Label>Email address</Form.Label>
<Form.Control type="email" placeholder="Enter email" onChange={(e) => setEmail(e.target.value)} />
</Form.Group>
<Form.Group controlId="formBasicPassword">
<Form.Label>Password</Form.Label>
<Form.Control type="password" placeholder="Password" onChange={(e) => setPassword(e.target.value)} />
</Form.Group>
<Button variant="primary" type="submit" >
Submit
</Button>
</Form>
</Col>
</Row>
</Container>
);
}
export default Login;
服务.js
import axios from "axios";
const baseUrl = "http://localhost:4000/";
export function login(email, password) {
var body = {email: email, password: password}
axios.post(baseUrl + 'user/login', body)
.then((res)=>{
console.log("res in service", res);
return res;
})
}
我尝试使用 useEffect 但不知道如何在 useEffect() 中调用函数
最佳答案
您需要返回您的登录
函数:
export async function login(email, password) {
var body = {email: email, password: password}
return axios.post(baseUrl + 'user/login', body)
.then((res)=>{
console.log("res in service", res);
return res;
})
}
或者简单地说:
export async function login(email, password) {
var body = {email: email, password: password}
return axios.post(baseUrl + 'user/login', body);
}
关于javascript - 异步/等待不适用于 react js( Hook ),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/59212005/