javascript: will the callback be invoked again after the main function is completed, while the callback is invoked once intentionally in the main function?

Use this code as a demonstration:

            const timeFuncRuntime = funcParameter => {
let's t1 = ();
funcParameter ();
be t2 = ();
returns t2 - t1;

const remind = () => console.log (& # 39; competes for callback & # 39;);

console.log (timeFuncRuntime (remember));

I've tried Chrome, it's only invoked once (the call intentionally). so my conclusion is that the call will be invoked once, either in the body of the main function (if it is called) or after the main function is completed, is it correct?