JSX 中的 {} 和 ${} 有什么区别？

Question

The ${} is template literals. What's {} without the $ sign?

In React:

function App(){
    return(<div temp={3}></div>);
}

(I was looking up the difference and nothing came up. So, I think this question is needed as I couldn't know if I was using JS or JSX.)

Answer 1

You're quite correct that javascript uses ${} to make use of template literals within strings surrounded by backticks `

The code you pasted is not javascript, it is JSX and the { and } is how you embed expressions within it.