JavaScript Fundamentals · Objects · Lesson 20 of 48
Methods and this
Concept
Methods and this
Functions stored inside objects are called methods. The this keyword refers to the object the method belongs to.
this is determined by how a function is called, not where it's defined — calling person.greet() sets this to person, but copying that same function elsewhere can change what this refers to.
- Explain the core idea behind Methods and this.
- Predict output before running a change.
- Test one realistic and one unusual input.
- Use the result to make the next decision.
- 1. Read one concept.
- 2. Change the example.
- 3. Run, compare, and explain.
- 4. Complete the challenge below.
Self-check before continuing
Without looking at the example, describe what changes when you modify one input in Methods and this. Then reopen the editor and prove your explanation with a small test.
You are ready to continue when you can predict, test, and explain the result.
Your turn
Add a method to the student object that returns a formatted introduction sentence.
Ask about this lesson or your next move. The guide explains the path without taking the work away from you.
Ready for the next lesson?
Mark this lesson complete when you have finished the exercise.
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