Quick JavaScript Crash Course - Modern and Advanced JavaScript - Static Keyword

The video tutorial covers ES6 class features, focusing on the static keyword. It explains how static fields, methods, and properties are associated with the class rather than instances, allowing direct access via the class name. The tutorial demonstrates the use of static fields and methods, highlighting the importance of the static keyword and the implications of using 'this' in static contexts. The session concludes with a summary of how static elements function within ES6 classes.

What is a key characteristic of static fields in ES6 classes?

• They are associated with the class itself, not instances.

• They can only be accessed through an instance of the class.

• They are unique to each instance of a class.

• They require an object to be created before they can be used.

How can you access a static field in an ES6 class?

• By creating an instance of the class.

• Using the class name directly.

• Through a private method.

• By using the 'this' keyword.

What happens if you try to access a static field through an instance of the class?

• It throws an error.

• It returns the default value.

• It returns undefined.

• It accesses the field successfully.

What is a common mistake when using static methods in ES6 classes?

• Using the 'this' keyword to refer to the class.

• Defining them without the static keyword.

• Accessing them through the class name.

• Using them to modify instance variables.

How can you resolve the issue of 'this' keyword in static methods?

• By avoiding the use of 'this' altogether.

• By using 'this' to refer to the class.

• By using 'this' to refer to an instance.

• By using 'this' to refer to a static field.