Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript Asynchronous Programming with JavaScript Asynchronous JavaScript with Callbacks Callback Functions Review

Matthew Jones
Matthew Jones
9,047 Points
Posted by Matthew Jones
Matthew Jones
9,047 Points

How to invoke callback function

function makeMeal(meal, cb) { alert(Preparing ${meal}.); //answer goes here; }

makeMeal('lunch', () => { alert('Finished the meal!'); });

The above is code for one of the quizzes and it's the only question I cannot get right. I feel like I'm overthinking it, but I'm not sure how to invoke the makeMeal function.

2 Answers

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

Invoking a function is just a matter of writing the function name with parentheses after it.

In this case, the parameter "cb" represents the function, so to invoke it you would write :point_right: cb()

Matthew Jones
Matthew Jones
9,047 Points
Matthew Jones
Matthew Jones
9,047 Points

Yup, I was overthinking it. Thank you so much!