reactjs

问题 My web developer telling me that react framework based website hides code at the client side. I have website where seeing the source code displays only few line of code nothing else like the body of the website page. Please help. You can find the website at https://raybaby.us/ Any help will be appreciated as I'm struggling with source code regarding SEO of website. 回答1: From the context of your question - I think what you're referring to is the rendering of the HTML. So yes typically what

问题 I have a very simple test: describe('sanity', () => { it('sanity', () => { expect(true).toBeTruthy() }) }) And I'm receiving the following error: FAIL spec/javascript/sanity_test.js ● Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". Here's what you can do: • To

问题 I'm using React Router Dom and the BrowserRouter object to enable browser based navigation for a site I'm building. Navigation works well, but if a user hits the back button, the entirety of my App's state is wiped clean. I'm not sure why this is happening. I've tried searching around, but all of the answers I've found don't mention why App state is getting reset. Here's my implementation: <BrowserRouter> <Switch> <Route path="/" exact render={()=><LandingPage/>} <Route path="/about" render={

问题 I have a component with a div.modal that I would like to transition with CSS. The initial values are set for w=0 and h=0 , transition is all, 1s . This component is a conditional render wihin another component named - <Starter /> , which in turn is a component of <Home /> . I have tried this in a number of places however the DOM is not ready { document.getElementsByClassName('modal').style.width = 'auto' } The component: const JoinSign = () => { return ( <div id="overlay"> <div className=

问题 Summarize the problem The goal is for the styling of the header/navbar to change as the viewer scrolls down the page. The header is already sticky/fixed in place, but I want the background/text color to change once the user scrolls down. All other components are adhering to the styling that I want so far, but trying to figure out this header has really been confusing for me. Describe what you've tried I tried to use a hook that I found online here https://www.ibrahima-ndaw.com/blog/build-a

问题 I'm trying to implement a form using react-hook-form. I'm not able to actually connect the data and event working correctly. As the docs state, I'm using the handleSubmit function from the react-hook-form library, with my custom Axios post as the onSubmit parameter: onSubmit={handleSubmit(onSubmit) According to my Vscode, the data and event are not registering correctly const onSubmit = (data, e) => {} . When the form is submitted, the web console logs an empty form: {email: "", password: ""}

问题 I m having one sub child component which is inside a loop of parent component. when one of the sub child components is updating the state of parent component, it is re-rendering the all children since it is loop. How can i avoid the re-render for each iteration. It should update that particular sub child. import React, { useState } from "react"; function Parent() { const [selectedChild, setSelectedChild] = useState([]); const onChangeHandle = (event, id) => { const checked = event.target

问题 Using redux router, In my components I have access to the params object with information about by URL. However, inside my actioncreators, I get the state through getState() , and thus the params props has not been injected. Is there a way around this? 回答1: to get access params in action creators, you should pass it: in component this.props.someAction(this.props.params) in action creator const someAction = (params)=>{ let {data} = params; .... } to get access params in selector, you should

问题 Hi I am working with an API that retrieves the URL of an image. I am then trying to pass that URL into an tag as follows: <img class="img-fluid" src={this.state.representatives[i].pic}/> Locally I am met with But when I try to use the app on AWS Amplify, I am met with: I have tried hardcoding the URL into the app but it returns the same error. I am really confused where to go from here. For example the image URL pulled from the API for Mark Warner is http://bioguide.congress.gov/bioguide

问题 Hi I am working with an API that retrieves the URL of an image. I am then trying to pass that URL into an tag as follows: <img class="img-fluid" src={this.state.representatives[i].pic}/> Locally I am met with But when I try to use the app on AWS Amplify, I am met with: I have tried hardcoding the URL into the app but it returns the same error. I am really confused where to go from here. For example the image URL pulled from the API for Mark Warner is http://bioguide.congress.gov/bioguide