TL;DR npm uninstall node-sass npm install [email protected] Or, if using Yarn (default in newer CRA versions) yarn remove node-sass yarn add [email protected] Edit2: sass-loader v10.0.5 fixes it. The problem is you might not be using it as a project dependency, but more as a dependency of your dependencies. CRA uses a fixed version, angular-cli locks to node-sass v4, and so on. … Read more
I’ve got a maven project, within which is JavaScript project cloned as a git sub-module. So the directory structure looks like mavenapp/src/main/javascript/[npm project files] Inside my package.json, the test looks like this: but when I try to run npm test, it says ‘react-scripts’ is not recognized as an internal or external command, Interestingly, when I clone the … Read more
I am trying to set up my React.js app so that it only renders if a variable I have set is true. The way my render function is set up looks like: Basically, the important portion here is the if(this.state.submitted==false) portion (I want these div elements to show up when the submitted variable is set to false). But when running this, I get … Read more
The reason the linter rule wants onChange to go into the useEffect hook is because it’s possible for onChange to change between renders, and the lint rule is intended to prevent that sort of “stale data” reference. For example: Every single render of MyParentComponent will pass a different onChange function to MyCustomComponent. In your specific case, you probably don’t care: you only want to call onChange when the … Read more
If you’re just after console logging here’s what I’d do: Shouldn’t be any need for those packages just to do console logging.
The callback is made in a different context. You need to bind to this in order to have access inside the callback: EDIT: Looks like you have to bind both the init and api calls:
You are calling ReactDOM.render within a React component that doesn’t get rendered. Call ReactDOM render outside of the class definition for help To render your button to the screen: That’s it. To avoid confusion should try and give your components meaningful names. Naming both of them Help can get confusing when you are trying to import one … Read more
Q: Is this ok?A: yes Q: Is this expected?Yes, this is expected (if you are using react-redux). Q: Is this an anti-pattern?A: No, this is not an anti-pattern. It’s called “connecting” your component or “making it smart”. It’s by design. It allows you to decouple your component from your state an additional time which increases the modularity of … Read more
Think of it like you’re just calling JavaScript functions. You can’t use a for loop where the arguments to a function call would go: See how the function tbody is being passed a for loop as an argument – leading to a syntax error. But you can make an array, and then pass that in as an argument: You can basically … Read more
You are not specifying what your Post component should delete. In other words, the props.delete is not receiving an id to pass up to your parent component. In order to do that, you can change that to () => props.delete(props.id) and then in your parent component you need to have the handleDelete method receive the id of the item you want to target which is the id we passed … Read more