next.js | 易学教程

Losing dropdown select options upon filtering using react context api

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问题 I just started learning React 2 weeks ago so I am still finding some concepts difficult. I went from building a CRA to converting it to NextJS and opting for using context API with hooks for state management. I am working on filtering right now for a list of articles using a dropdown. When I select a certain type of article, the list filters correctly, but as I go back to the dropdown, only the original option is there along with the current option. When I click on the original option, all

Losing dropdown select options upon filtering using react context api

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How to restrict access to pages in next.js using firebase auth?

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问题 I am working on a next.js app which uses firebase. I need to use firebase auth package to restrict access to pages. The with-firebase-authentication example doesn't show authentication for multiple pages. import React from 'react'; import Router from 'next/router'; import { firebase } from '../../firebase'; import * as routes from '../../constants/routes'; const withAuthorization = (needsAuthorization) => (Component) => { class WithAuthorization extends React.Component { componentDidMount() {

How to implement adobe analytics in Next Js (React )?

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问题 I have given the requirement to add adobe analytics in the react js application that I have built. Please apologize me that I don't have any basic idea/ understanding on how to implement it, So help from experts would be very helpful for me. Requirement is that I need to implement the adobe analytics in the next js with typescript project that I have built in.. I could find only google analytics sample here in official documentation but not adobe.. The complete sample working application code

How to implement adobe analytics in Next Js (React )?

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Cookie not set with express-session in production

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问题 My app is divided between Client and Server. Client is a frontend side Nextjs app hosted on Now.sh, Server is its backend created with Express and hosted on Heroku, so the domains are client-app.now.sh and server-app.herokuapp.com . Authentication Authentication system is based on cookies and I'm using express-session to achieve it. This is my express-session configuration app.use( session({ store: process.env.NODE_ENV === "production" ? new RedisStore({ url: process.env.REDIS_URL }) : new

Cookie not set with express-session in production

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Next.js: Router.push with state

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问题 I'm using next.js for rebuilding an app for server side rendering. I have a button that handles a search request. In the old app, the handler was this one: search = (event) => { event.preventDefault(); history.push({ pathname: '/results', state: { pattern: this.state.searchText, } }); } In the results class, I could get the state date with this.props.location.state.pattern. So now I'm using next.js: import Router, { withRouter } from 'next/router' performSearch = (event) => { event

View source not displaying dynamic content

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问题 I am making very simple next js application, where everything is working fine but except the view source. I am making a promise and there is a delay in retrieving content and after when those content loaded and if I view source (ctrl + u) in chrome, I couldn't get those dynamic content loaded in the source. So it is reproduceable in the link, Step 1) Just click on the codesandbox link: https://3re10.sse.codesandbox.io Step 2) After that choose view source (ctrl + u), and it gives page like,

Next.js和Nuxt.js的语法比较

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React.js和Vue.js都是很好的框架。而且Next.js和Nuxt.js甚至将它们带入了一个新的高度，这有助于我们以更少的配置和更好的可维护性来创建应用程序。但是，如果你必须经常在框架之间切换，在深入探讨另一个框架之后，你可能会轻易忘记另一个框架中的语法。在本文中，我总结了这些框架的基本语法和方案，然后并排列出。我希望这可以帮助我们尽快掌握语法。上一篇文章： React.js和Vue.js的语法并列比较 Assets Next.js /* |- public/ |-- my-image.png */ function MyImage ( ) { return < img src = "/my-image.png" alt = "my image" /> ; } 复制代码 Nuxt.js assets，默认情况下，Nuxt使用vue-loader、file-loader和url-loader来提供强大的assets服务。  < img src = "~/assets/image.png" alt = "image" /> 复制代码 static，自动服务  < img src = "/image.png" alt = "image" /> 复制代码