reactjs

问题 I'm building a react application, and I'm importing a node module which uses the spread operator ... and I'm getting an error "Module parse failed: Unexpected token (100:6)" at this operator. How can I get this to work? Thanks 回答1: The create-react-app cli has already bundled this ES2015 feature. Older babel does not support this and needs to be installed separately Now assuming you setup your react manually and not using the create-react-app. You can set up this by installing the package

问题 I have a problem with the concept of modals in React. When using server side rendered templates with jQuery I was used to have one empty global modal template always available (included in base template that was always extended). Then when making AJAX call I just populated modal..something like this: $('.modal-global-content').html(content); $('.modal-global').show(); So how do I make this concept in React? 回答1: There are a few ways of doing this. The first involves passing in the modal state

问题 I am trying to make a shopping cart app like this site but using reactjs . index.js : (Sending each product to product component ) {products.length > 0 ? products.map((product) => ( <Product key={product.id} product={product} /> )) : ""} components/product.js : <div> {product?.price} <h3> {product.name ? product.name : ""} </h3> <div dangerouslySetInnerHTML={{ __html: product?.description }} /> </div> Also I have the ADD button UI switch code and that will look like, Before clicking add

问题 I have two applications, app1 is developed in reactJS and app2 in angularJS sharing same login session, - Application 1 http://application-1:1234/ - APplication 2 http://application-2:2345/ My needs is to have a seemless navigation between both apps, as they share the same login credentials. I have created NGINX reverse proxy configuration, server { listen 8080; server_name http://global-ip:8080; location / { proxy_pass http://application-1:1234; proxy_http_version 1.1; proxy_set_header

问题 From the docs something like this should be possible: const wrapper = mount(<Foo name="foo" />); expect(wrapper.find('.foo')).to.have.length(1); But in my case this throws an error saying cannot read property have of undefined. Using this works though: expect(wrapper.find('.foo').length).toBe(1); 回答1: Your expect function is probably expect-enzyme, which has camelCase methods ( toBe() ), .to.have is dot separated expect notation, as seen in these docs : http://chaijs.com/api/bdd/ vs the

问题 From the docs something like this should be possible: const wrapper = mount(<Foo name="foo" />); expect(wrapper.find('.foo')).to.have.length(1); But in my case this throws an error saying cannot read property have of undefined. Using this works though: expect(wrapper.find('.foo').length).toBe(1); 回答1: Your expect function is probably expect-enzyme, which has camelCase methods ( toBe() ), .to.have is dot separated expect notation, as seen in these docs : http://chaijs.com/api/bdd/ vs the

问题 I'm just wanted to know if there is a best practice approach to rendering an element with ReactJS dynamically Consider these scenarios: (1) Parameter Factory component: A parameterised factory component whose job is to render a component based on a string parameter , is there a way of doing so without having to revert to React.createElement? <pre><code>// The following doesn't work class Quiz extends React.Component{ constructor (props){ super (props); this.state = { questionText: '',

问题 I'm just wanted to know if there is a best practice approach to rendering an element with ReactJS dynamically Consider these scenarios: (1) Parameter Factory component: A parameterised factory component whose job is to render a component based on a string parameter , is there a way of doing so without having to revert to React.createElement? <pre><code>// The following doesn't work class Quiz extends React.Component{ constructor (props){ super (props); this.state = { questionText: '',

问题 Hi All I realized just recently when CRA(npx create-react-app myapp) , serviceWorker is missing from src folder and instead I noticed reportWebVitals().Is there some update from React that got ride of serviceWorker and replaced it with reportWebVitals ? Or there it is something I am not doing correctly? pls lmk. thank you 回答1: I have the same problem here! I don’t know if I did something wrong. But definitely seems like create-react-app has changed the way that manage service worker. I found

问题 Hi All I realized just recently when CRA(npx create-react-app myapp) , serviceWorker is missing from src folder and instead I noticed reportWebVitals().Is there some update from React that got ride of serviceWorker and replaced it with reportWebVitals ? Or there it is something I am not doing correctly? pls lmk. thank you 回答1: I have the same problem here! I don’t know if I did something wrong. But definitely seems like create-react-app has changed the way that manage service worker. I found