Beijing table tennis training school
Interactive Video
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1st - 3rd Grade
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Practice Problem
•
Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary role of 'this' in programming?
To import a module
To create a new function
To declare a variable
To refer to the current object
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which context does 'this' refer to the global object?
Inside a method of an object
Inside a regular function in non-strict mode
Inside an arrow function
Inside a function in strict mode
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does 'this' behave in an arrow function?
It refers to the global object
It retains the value of 'this' from the enclosing lexical context
It creates a new object
It refers to the object that called the function
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a common mistake when using 'this' in event handlers?
Assuming 'this' refers to the event target
Using 'this' to access global variables
Expecting 'this' to be undefined
Using 'this' to declare new variables
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a method to explicitly set the value of 'this'?
Declaring a variable
Using a loop
Creating a new object
Using the 'bind' method
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