The path-to-regexp used in react-router4 supports the following modes: var toPathRegexp = pathToRegexp.compile( user :id( d+) ) toPathRegexp({ id: 123 }) => " user 123" toPathRegexp({ id: 123 }) => " user 123" t...
Click on the home page, and then click on version detection. At this time, it all jumps normally. Look at the address bar, and then click on the home page. Why does the address become http: localhost:3000 -sharp install update erp? how to append ...
Today I used the react-router onEnter function to verify that the user is logged in. When I went to the official website to check the API document, I found that the V4 version of the document did not have this method, but the v3 document had a descriptio...
pass parameters through params, but can only one parameter be passed? <Route path=" Article :id" component={Article} > this.props.history.push(` Article ${id}`) can this method pass only one parameter? . How should I write if I ...
recently, in learning react, I would like to ask an experienced friend, in general, is the router of react set in app.js or index.js? ...
1. The page refreshes, but the active effect resets back to the first 2. Here is the code const menu = [] {menuUrl: console , menuName: }, {menuUrl: loanBefore , menuName: }, {menuUrl: loanLater , menuName: }, {menuUrl: cu...
the hash,location.hash used is empty index.js <Router> <Switch> <Route path=" " exact render={() =><Redirect to=" main" >} > <Route path=" login" exact component={L...
problems encountered in upgrading v4 the routes array does not have the function: the current menu of sub-routes or sub-routes of the menu remains expanded. For example, the user user, then user * matches of the side menu expansion....
1. Due to the needs of the business scenario, the route jump is controlled through js, and there is no programmatic route navigation in the react-router4 documents. https: codeshelper.com q 10. I found this article on the website, but I can only get...
ReactDom.render( (<Provider store={store}> <BrowserRouter> <Switch> <Route path=" login" exact component={Login} > <Route component={Layout} > < Switch> < BrowserRou...
encountered the following scenario when developing the page: Log in to the registration page, and the other pages (such as home page and details page) have different structures, but the other pages have the same page skeleton, such as the same head an...
Custom main.jsx renders a First,First with a Link in it and then opens Son,. How can I open Son,main and First without displaying them? **main.jsx** import React from "react"; import { BrowserRouter as Router, Switch,Route, Link } from "...
fetch(url) .then(res => res.text()) .then(result => { this.setState({ detail: result }); }); render () { return ( <div dangerouslySetInnerHTML={{ __html:thi...
background: I want to experience the features of the new version of react these days, so I want to update the react of the project to version 16. problem react is updated to 16.4, React.PropTypes is discarded, and after the project is run, it i...
I wonder if metadata can be passed in react like vue-router {path: , name: Home , component: Home, meta: {title: homepage } so I can display title somewhere on the page but how can react router define its own metadata or meta-attributes ...
write a simple DEMO,create-react-app + Express background access database, react front-end display. The development environment is running normally. the server release environment is also very simple, with node 10.9. After, npm run build according to ...
problem description use react-router-dom s HashRouter to create routes for Link to jump to, how to return to the previous layer without refreshing the page the environmental background of the problems and what methods you have tried "react-rout...
make a website, header and footer are fixed, and the intermediate content is matched by route. The code is as follows: class App extends React.Component { render () { return ( <div> <BackTop > <Layout className="layout&...
use the render method of react-router-dom s route tag, which cannot be rendered using this.props.children in the component related environment react16 related codes index.js import React from react ; import ReactDOM from react-dom ; impor...
<ul className="nav"> <li> <Link to=" section1">test1< Link> < li> <li> <Link to=" section2">test2< Link> < li> <li> <...
how does canvas use multiple coordinates to cut out irregular images ...
recently, there is a requirement in the project that when the download button is clicked in the browser, the dialog box of which path to download the file will pop up. May I ask whether this function js can be realized by calling some API ...
There is a water word in the first line of . Starting from the second line, replace the water on the previous line with the water question, which is listed as follows: Water Water questions Water questions input multiple sets of data, one line for e...
first give an example:: const testFun = () = > { let testParams const sonFun = () => { testParams = 3 } console.log(testParams) } how can I console the value of testParams if I write it like this? ...
ORM Model Tokens has a field that is the creation time, as follows: create_time = db.Column(db.DateTime, nullable=False, default=datetime.now) Screenshot in the database: stackoverflowcast: db.cast(t.create_time, db.DATE)print: alone prin...