JavaScript In Your JSX In Your JavaScript

So far, we’ve focused on writing JSX expressions. It’s similar to writing bits of HTML, but inside of a JavaScript file.

In this lesson, we’re going to add something new: regular JavaScript, written inside of a JSX expression, written inside of a JavaScript file.

Whoaaaa…

1.Starting on line 5, carefully write the following code. What do you think will appear in the browser?

ReactDOM.render(

<h1>2 + 3</h1>,

document.getElementById('app')

);

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