Why is this code not working?
Make sure that you start a line with ReactDOM.render, and that it's capitalized correctly.
Why is this code not working
ReactDOM.render(<h1> Render me!</h1>,
I spent a while on this as well. What I didn't realise is you need to click the tab called "app.js" and add the code there. The tab that shows up as default is called "previous.js" - if you add the code on that tab, it will fail.
This app is not working now. On and off.
Same issue here. Not loading the code editor
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