小编alt*_*ios的帖子

我试图理解为什么我似乎无法将参数传递给选择器。

本质上：我有一个存储数字和布尔值的逻辑 - 该数字是我想要选择材料元素的参数 - 我有一个调度操作的按钮：

//on a jobcard - dispatches to the material logic slice, pushing the number into the redux state: materialforJobNumber;
 <button className="materialViewer"  onClick={() =>{dispatch(materialView(data.jobsessionkey))}}> MATERIAL</button>

它分派到逻辑片：

//logic slice
materialView:(state, action)=>{
    console.log("what");
    console.log("material view succesfully called", action);
    const newState = {...state};
    console.log(newState);
    newState.materialforJobNumber = action.payload;
    newState.showMaterial=true;
    return newState
},

//the component that handles displaying the list of material for a job;

import {selectAttachedByJobKey} from "../MaterialCard/MaterialSlice";
const store= useStore();
const foundJN = store.getState().logic.materialforJobNumber;
const selectedJob=store.getState().jobs.find(x=>x.jobsessionkey==foundJN);
const materials = …

我有这个警告：

React Hook useEffect has a missing dependency: 'dispatch'. Either include it or remove the dependency array  react-hooks/exhaustive-deps

用这个代码：

import { useDispatch } from 'react-redux';
import openSocket from "socket.io-client";
import {populateCustomers} from './slices/CustomerSlice';
const ENDPOINT = config.ENDPOINT; //socket address

function App() {
  const dispatch = useDispatch();
  useEffect(() => {
    const socket = openSocket(ENDPOINT);
    //hydrate
    socket.on("hydrateCustomers",data=>dispatch(populateCustomers(data)))

  },[]);

这个想法是，套接字打开一次，并且在服务器发生事件时 - 数据从响应分派到 redux 存储中。

我很确定我想要一个空的依赖项数组，因为我只想运行一次......有没有更好的方法来处理这种情况？或者我应该忽略这个警告？

编辑：由于代码片段没有重现错误 - 这里是 github repo 的链接：（代码远未完成）

https://github.com/altruios/clicker-game

我现在已经在两台计算机上运行它 - 两者都具有代码片段未显示的相同行为。

//interestingly enough, this works just fine, where the same code I run locally has the doubling.
//when I comment out ALL other code except for this code I STILL get the error locally
//at this point the only difference is import export of components... here they are in one file.
//below is original code from file (
/* 
FILE::::Clicker.js
 
import React from 'react';

function Clicker(props)	
	{
	return(
		<div>
		{props.name}
		<button …

我正在尝试让 websockets 的邮递员 api 正常工作，但是我什至无法建立连接：

当我尝试建立连接时

ws://localhost:5001/socket.io/

结果是：

Error: Unexpected server response: 400 //for ws

ws://localhost:5001/socket.io/

连接到 socket.io/express/nodejs 服务器的正确 url 字符串是什么？