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Understand JavaScript's this Keyword in Depth

Instructor

Marius Schulz
18m closed-captioning
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4.6
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JavaScript’s this keyword is a source of confusion for new and experienced developers alike. It can be frustrating if, for some reason, this doesn’t point to the context that was intended.

This course will help you understand JavaScript’s this mechanism in-depth. Marius will take us through all of the ways this will change its values, from why many libraries use "use strict" to how arrow functions take its outer execution context’s this.

Over 8 lessons, you’ll learn:

  • how JavaScript implicitly sets the this context, and how we can set it ourselves
  • that the call-site of a function determines the this value of that function invocation
  • how to call a function with a specific this value
  • how to create functions that always remain tied to a specific this context
  • how this is treated within arrow functions and classes

Following the course, this will feel less frustrating, more intuitive, and far more useful in your day-to-day.

Learner Reviews

  • Sanchit
    3 months ago
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    What did you like about this course?

    Easy course to follow but should add more examples for the concepts to last long/:

  • Felipe Segall
    4 months ago
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    What did you like about this course?

    This is great to keep as a reference. :)

  • h2m2
    5 months ago
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    What did you like about this course?

    Excellent

    To the point and I got the impression to be taken on a journey through the spec histroy of JS

    Very good to remember.

  • Pavel Klochkov
    5 months ago
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    What did you like about this course?

    Thanks for the course! Fast, clear and with good examples.

  • Brandon Rockhold
    a year ago
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    What did you like about this course?

    Concise and easy to understand. Thanks.

  • Vadym Orlov
    a year ago
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    What did you like about this course?

    Very cool course with short and clear explanations

Course Content

18m • 8 lessons

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