. < Index location= {location} > { routes.map(r => { console.log(r) return( <Route key={r.path} exact path={r.path} component={r.component...
now the company s background system uses Ant Financial Services Group s dva.js, react+redux-based encapsulation, using dva-cli, now to do login authentication. There seems to be no beforeEach hook function in react-router-dom similar to the beforeEac...
at first, I want to implement a route nesting. There is no problem with (App) on the main route, so it can be realized. then I want to do a route nesting on the child route, but < Route > does not show it. const App = () => ( <Switch>...
I want to jump to an outer chain after clicking on the event in react. I would like to ask how to jump. The default jump method does not support jumping out of the chain. this.context.router.history.push( download ) this.props.history.push( downlo...
now there is a function that needs to determine the permission of the address of the route. If you do not have the permission, you will not enter the route. saw this in the react-router document. const getConfirmation = (message, callback) => { c...
topic description react-router nesting routing elements, the relevant contents of the child elements cannot be loaded, and the whole address cannot match sources of topics and their own ideas want to use outer route to implement template page, log...
how to do the following two ways -programmatic navigation- router.push ({name: user , params: {userId: 123}}) with query parameters, change to register?plan=private router.push ({path: register , query: {plan: private }}) -Navigation...
in the development environment, it can be accessed normally through info boss, but cannot be accessed through info boss after packaging. An error was reported. main.5fc0fc94.js:1 Uncaught SyntaxError: Unexpected token if you can access it normall...
problem description for example, I have a list page with the current address something list?page=1, when I click on the next page, the address becomes something list?page=2. I hope that by clicking the browser s back button at this time, I will be ab...
< Link to= {{pathname: " users ", query: {type: "activity "} > aaa < Link > url: http: 10.1.1.143:3200 users 951921?type=achievement?type=achievement changes the whole component is reloaded, v3 will not what is going on to ask for advice? ...
import React, {Component} from react ; import { BrowserRouter as Router, Route, NavLink,Switch } from "react-router-dom"; import . index.less ; import Index from .. .. pages Index ; import About from .. .. pages About ; import Prof...
as shown in the figure, the project enters Main component by default. Main has four sub-components. Through footer switching, the default display is Msite component . The route of react is really difficult to understand, and there is a problem with h...
A breadcrumb navigation function that encapsulates a separate component. When you close the current tab, you need to jump to the previous path. I consider passing history when the parent invokes this component, and then I can jump through histor...
there are many APIs in model that can only be called after login. It is normal for code to return 2000.When returns 20020, the session expires. At this time, I want to jump back to the login page. This is how I handled it . *fetchShopSaleList({ pay...
problem description now we have made a webapp, technology stack, such as react+antd-mobile+react-router4, etc., and now we need to record the previous page and the next page of each page jump, stay time, and so on. it s not a big problem to think ab...
< H2 > Why do I have to start in the web environment after build after using react-router? < H2 > it s all about how to start it on the Internet. Did not say why it should be placed in the web server environment ...
I have a Layout component that looks like this: render(){ return( <a > <b > {this.props.children} ) } then in App.js , router.js is a branch route: import UserRouter from user router.js <Layou...
after clicking on the component, the route changes, the page does not jump, and no request is made. Refresh the page and it will jump. The code is as follows. <div className="city_name"> <Link to=" city"> &...
before using react-router v3 when setting the primary route is Home, as long as the parameter is not set, Home asd will not match, jump to 404, but after upgrading v4, Home primary route, no parameters, no stator route, Home asd will also match ...
recently wrote a web, embedded in an iOS webView. ReactJS+webpack+react-router4 is used in web. Web can be opened in Chrome and Safari can be normal push and goback. Loading web,web in webview in iOS App works well with push, but goback fails. router ...
how can I update the contents of the first option of Tab1 by clicking the button above without switching here is the official demo code https: codesandbox.io s ry681pj8vn <div> <Button type="primary">update< Button> ...
the value taken out each time is 2. Why but the fiddler grab package also shows that it was only called once. There is no record of two calls. this happens only in js, but not if you open the interface address in the browser. ...
now, if you upload 9 photos, you have to send them to the server nine times, and the server has to wait for all of them to be uploaded before it can be processed. Is there a way for Mini Program to upload more than one picture at a time? ...
ls tmp project1 project2 project3 project4 I want to upload project1 and its folders and files to github. if you do so cd tmp project1 git init git add. git commit-m "upload " git remote add origin https: github.com xxxx mygit.git p...
The scenario is the operation of a Huffman coding tree. The so-called Huffman coding is to re-encode the characters in the text with 0 and 1 in a certain way, in which more characters use fewer digits. For example, the letter e appears a lot in this tex...