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 Callback Functions in JavaScript Introduction to Callback Functions Creating an Anonymous Callback Function

Posted by Bashir Orfani
Bashir Orfani
13,170 Points

javascript

In the app.js file, functionRunner executes a callback, log. Convert log in to an anonymous function and pass the anonymous function directly into functionRunner.

function() {

    console.log("Hello World!"); 
 }
functionRunner(function(){


    console.log("Hello World!");

ā€‹

Abdullah Howard
Abdullah Howard
11,955 Points

When asking for help it is very helpful to give a description of what the problem is and what you tried.

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

Basically, the conversion involves removing the function name "log" in both places, and moving the entire definition into the spot where the second "log" used to be.