Modern JavaScript from the Beginning - Second Edition - For...in Loop

The video tutorial explains how to use the for-in loop in JavaScript to iterate over object properties and array indices. It demonstrates creating an object with color properties and using a for-in loop to log keys and values. The tutorial also covers using for-in loops with arrays, highlighting the difference in behavior compared to objects. Finally, it introduces the concept of high-order array methods, setting the stage for the next video.

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