Javascript ReactJs:-如何在单击按钮时调用dispatch

我在Login.js中有以下代码-

import React from 'react'
import {Button} from "reactstrap";
import 'bootstrap/dist/css/bootstrap.min.css';
import { VerifyCredentials } from "./LoginReducers/Login_Action";
import   {GlobalProvider,GlobalConsumer} from "../GlobalStore";
import { LoginReducer } from "./LoginReducers/Login_Reducers";
function Login() {
    return (
        <div>
            <GlobalConsumer>
                {
                    store=>{
                        store.dispatch(LoginReducer)
                    }
                }
            </GlobalConsumer>
            
                <form>
                <input type="text" name="txtLoginId" ></input>
                <input type="password" name="txtPassword" ></input>
                <Button color="success"></Button>
                </form>
            
            
        </div>
    )
}

export default Login

import Axios from "axios";
import { VerifyCredentials } from "./Login_Action";

const initialState={
    userName:"",
    password:"",
    isVarified:false
}
const url='http://localhost:52016/api/values/';
export const  LoginReducer=(state=initialState,action)=>{
    switch (action.type) {
        case 'VERIFY_CREDENTIALS':
            
            Axios.get(url)
                 .then(x=>{
                     alert(x.data);

                 })
    
        default:
            break;
    }
}

我如何在单击按钮时呼叫store.dispatch

我试过了-

<Button color="success" onClick={() => store.dispatch({ type: 'VERIFY_CREDENTIALS' })}></Button>

store.dispatch（{type:'VERIFY_CREDENTIALS'}）}>

---

但是这并没有帮助，不要在减缩器中编写异步代码

还原程序应该返回一个更新状态，因为您没有从还原程序返回任何内容。在默认情况下，返回现有状态

export const  LoginReducer=(state=initialState,action)=>{
    switch (action.type) {
        case 'VERIFY_CREDENTIALS':
            return {...state, ...action.payload}  
        default:
            return state;
    }
}

组成部分

async callAPI =() => {
    const url='http://localhost:52016/api/values/'; // move to better place
    const {data} = await Axios.get(url);
    store.dispatch({ type: 'VERIFY_CREDENTIALS', payload: data })
}

<Button color="success" onClick={callAPI}></Button>

async callAPI=（）=>{
常量url=http://localhost:52016/api/values/“；//搬到更好的地方去
const{data}=await Axios.get（url）；
dispatch（{type:'VERIFY_CREDENTIALS'，payload:data}）
}

首先要像这样更换减速器：，并将您的表格放入

全球消费者

。您应该使用react redux软件包