Instead of a defining journalEntries as a string define it as an array and push the JSX elements to the array in order to render, for example: populateJournal() { const j = Object.values(this.state.journal); var journalEntries = []; for (var i = 0; i < j.length; i++) { journalEntries.push( <div> <h3>{j[i].title} – {j[i].date}</h3> <p>{j[i].entry}</p> </div> ); … Read more
I had the same error with <Text></Text> and it was because I had not imported the component.
There is also option to use @params definition: /** * * @param {{header: string, subheader: string, imageAlt: string, contentList: Array, orderLink: Object, contentLink: Object}} props */ export default function JumbotronMain(props) {…}
As per the error, the input tag should not have any children, take the label out of input closure tag render() { let radioid = this.props.radioid; return ( <div className=”row”> {this.props.options.map(function(option) { return ( <div key={radioid} className=”column”> <label>{option}</label> <input type=”radio” name={radioid} value={option}/> </div> ); })} </div> ); }
If you look at the code for the component you can see that it uses the className prop passed to it to combine with the row class to get the resulting set of classes (<Row className=”aaa bbb”… works).Also, if you provide the id prop like <Row id=”444″ … it will actually set the id attribute … Read more
Here’s an idea (sandbox example link). Include a phantom div in your footer component that represents the footer’s position that other dom elements will respect (i.e. affecting page flow by not being position: ‘fixed’;). var style = { backgroundColor: “#F8F8F8”, borderTop: “1px solid #E7E7E7”, textAlign: “center”, padding: “20px”, position: “fixed”, left: “0”, bottom: “0”, height: … Read more
You can just omit the value assignment; the attribute will be assigned a value of true by default. Instead of doing any of: <input data-enable-time=true /> <input data-enable-time=”true” /> <input data-enable-time={true} /> Do: <input data-enable-time /> This approach avoids the warning Value must be omitted for boolean attributes [react/jsx-boolean-value] when the code is linted via … Read more
It is destructuring assignment. The destructuring assignment syntax is a JavaScript expression that makes it possible to unpack values from arrays, or properties from objects, into distinct variables. Example (ES6): var person = {firstname: ‘john’, lastname: ‘doe’}; const firstname = person.firstname; const lastname = person.lastname; // same as this const { firstname, lastname } = … Read more
You want to pass a component constructor, not a component instance: import * as React from ‘react’; import { Route, RouteProps } from ‘react-router’; interface Props extends RouteProps { component: React.ComponentType; } const PrivateRoute = ({ component: Component, …rest }: Props) => { return ( <Route {…rest} render={(props) => <Component {…props} />} /> ); }; … Read more
The original answer is insufficient and not up to date with the current standards. JSX is NOT a language. It’s NOTHING BUT Javascript but with a different extension. Facebook came up with this new extension so that they can demarcate the XML-like implementation of HTML in JavaScript. In early versions of React, this extension was … Read more