Show/Hide components in ReactJS

I’ve provided a working example that follows your second approach. Updating the component’s state is the preferred way to show/hide children. Given you have this container: <div id=”container”> </div> you can either use modern Javascript (ES6, first example) or classic JavaScript (ES5, second example) to implement the component logic: Show/hide components using ES6 Try this … Read more

How to remove the hash from the url in react-router

Did you try the browserHistory option ? You will be able also to refresh the page from the browser or specify a url of one of existing routes and land on the right page. import { Router, Route, browserHistory } from ‘react-router’; ReactDOM.render(( <Router history={browserHistory}> <Route path=”” component={MasterPage}> <IndexRoute component={LoginPage} /> <Route path=”/search” component={SearchPage} /> … Read more

How do you change a style of a child when hovering over a parent using Material UI styles?

Below is an example of the correct syntax for v4 (“& $addIcon” nested within &:hover). Further down are some v5 examples. import * as React from “react”; import { render } from “react-dom”; import { Grid, makeStyles } from “@material-ui/core”; import AddIcon from “@material-ui/icons/Add”; const useStyles = makeStyles(theme => ({ outerDiv: { backgroundColor: theme.palette.grey[200], padding: … Read more

Cannot find module ‘sass’

To note! node-sass is deprecated as by now! Warning: LibSass and Node Sass are deprecated. While they will continue to receive maintenance releases indefinitely, there are no plans to add additional features or compatibility with any new CSS or Sass features. Projects that still use it should move onto Dart Sass. Instead you can see … Read more

jest: Test suite failed to run, SyntaxError: Unexpected token import

Jest sets the env variable to test, so I had to add my presets to the env setting in .babelrc: { “plugins”: [“syntax-dynamic-import”, “transform-runtime”], “presets”: [ [ “es2015”, { “modules”: false } ], “react”, “stage-0” ], “env”: { “start”: { “presets”: [ “react-hmre” ] }, “test”: { “presets”: [“es2015”, “react”, “stage-0”] } } }