-
React two unrelated components how does component 2 change when component 1 changes a state
I pass values through redux
scenario is when I click on the navigation bar of component 1 and refresh the ajax of component 2
is the data returned by ajax accepted by this.state.contnet
what should I write? There is an urgent need for ideas.
...
-
What is the problem with redux-saga triggering action multiple times?
1.rootSaga.js
import { fork, all } from "redux-saga effects";
import sub-sagas from submodules
import { assemblyLineSaga } from "@ routes Devops AssemblyLine saga";
import { DashboardSaga } from "@ routes Devops Dashboard sa...
-
How to cancel loading? when an error occurs in a dva request
The loading effect is handled uniformly in dva, but loading cannot be cancelled when an error occurs in the request. What should I do? ...
-
How redux updates store twice in a row
update the store data twice in a row, and the second time you will get the original store such as .
initState ={
a: ,
b:
};
dispatch(setState(a,1))
dispatch(setState(b,1))
the final state result is
{
a: ,
b:1
}
if you repla...
-
Basic use of redux
realize the function of adding and subtracting numbers by clicking buttons through redux. it doesn t work according to other demo. I don t know what the problem is. Please explain paste the code
below.
...
-
How does reducer get data from the background to initialize store?
I want to write that the value of state is retrieved from the background when reducer, is initialized. How should it be implemented? whether to use redux-thunk directly dispatch a function operation interface or state? that dispat already exists when u...
-
Different events in multiple components of React produce the same action
as mentioned, I have a project with multiple components, all of which have some event handling and operations. And different action events within these components may result in the same result, including updates to the redux.
for example, I have two m...
-
Why not replace the role of redux-thunk with asynchronous dispatch (action)?
redux-thunk
const fetchData = (params) => (dispatch) => {
setTimeout(() => {
dispatch({action: GET_DATA , payload: 111})
})
}
dispatch
const fetchData = (params) => ({action: GET_DATA , payload: 111});
setTimeout(() =>...
-
Should redux manage data as much as possible with redux?
as the title
if only component A will request apiA to get data, and the data will only be used by that component, then whether the data should be put into redux?
unrelated questions: if the request does not depend on the view content, should the req...
-
A problem with the Foundation of react and redux
how does it mean that return {} is an object, and then a comma separates two? Don t understand the meaning of the book
...
-
How to assign store data of redux of object type to state of react
I just started to learn js,react, and redux, is doing exercises by myself, but I want to transfer the data of store to the state, of react, but it is not successful. Please give me some guidance.
what you want to do: transfer the data obtained by API...
-
Management of whether ui components are visible in mobx?
there is a problem with using mobx:
obtain the backend interface data through @ action, then assign a value to @ observable data, and then calculate whether the modal needs to be displayed from data through @ computed modalVisiable. How can I change t...
-
How does redux ensure that state changes before requesting new data?
The list is an interface, and then get the specific details according to the id of the list, and then splice the information of the list in redux state. However, if the then after the list request calls the API of details, there is no guarantee that the ...
-
In the redux document example RedditAPI, how does dispatch get into the container component AsyncApp?
when the mapDispatchToProps method is passed into the connect, the dispatch in the component is undefined; when the mapDispatchToProps method is not passed into the connect, the dispatch in the component can be obtained Why does this happen?
...
-
React Cannot call a class as a function
import React from react ; import ReactDOM from react-dom ; import {HashRouter as Router, Route, Switch} from react-router-dom import {createStore, applyMiddleware, compose} from redux import thunk from react-thunk import {Prov...
-
How does the sub-data in redux state load data asynchronously for the first time?
look at the title, I guess you don t understand, ha, I don t understand either?
Let me describe it in detail
this is the case. I intend to store a data in redux. This data will be used in some sub-component of the application. The default value ne...
-
On the problem of multiple console output per routes page of zuiideal open source project ant admin
namespaceperformanceconsoleperformance:
each field output of the first console is empty, the second console will return the data of the first dispatch request, and the third time will return the data of two dispatch, but the network of the console on...
-
Problems with local storage and acquisition of redux information
how to store redux information without losing related information after page refresh, do localstorage or cookie local storage? If you are doing local storage, how do you get the relevant redux information after entering the page for the first time? Is th...
-
The method in Ant Design Pro Model's effects has the same name, resulting in an infinite loop. what is the reason for this?
the An and B codes of both models are the same, as follows:
export default {
namespace: A B ,
state: {}
effects: {
*add({payload}, {call, put}){
console.log("")
yield put({
type: add ,
...
-
How to deal with data in redux?
the specific scenarios are as follows:
reducer.js
const initialState = {
test: [
{
id: 1
show: true
},
{
id: 2
show: true
},
{
...
