Review of my first JavaScript code?

Hey that's pretty cool! Here's my feedback on the code:

1. Make the prompt a const variable instead of let.

2. Please, don't use var anymore, you seem to know let and const do exist ;)

3. Your prompt is prone to XSS, try to find a different solution for inserting content in the DOM

4. Don't use else if statements, they add unesseccary code, an if statement is good enough (bail out early)

5. (My opinion) use arrow functions instead of regular ones, ex: const foo = (a, b) => a + b;

6. (Also my opinion) use document.querySelector('.classEl #idEl');

How long have you been using JavaScript? It looks amazing if you're just starting out!

There is no need to init the text variable on top of the function. Just init it before setting innerHTML

const text = `Hello ${rebelName}, you have a total of ${xWings} xWing fighter pilots. Good luck!`;
document.getElementById("demo").innerHTML = text;