JavaScript Functions
JavaScript Functions - Important Points
| 6. | What is the syntax to declare a JavaScript function? |
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A. function myFunction() {}
B. let myFunction = function() {}
C. myFunction = function() {}
D. let myFunction() {}
View Answer Discuss Work SpaceAnswer: option a
Explanation:
The syntax to declare a JavaScript function is using the keyword "function" followed by the function name and parentheses, and then the function code enclosed in curly braces.
| 7. | Which keyword is used to return a value from a JavaScript function? |
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A. return
B. break
C. continue
D. yield
View Answer Discuss Work SpaceAnswer: option a
Explanation:
The "return" keyword is used to return a value from a JavaScript function.
| 8. | Which of the following is not a valid JavaScript function parameter passing method? |
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A. Pass by value
B. Pass by reference
C. Pass by pointer
D. Pass by object
View Answer Discuss Work SpaceAnswer: option c
Explanation:
JavaScript does not have the concept of pointers, so "Pass by pointer" is not a valid parameter passing method.
| 9. | What is the purpose of the "arguments" object in a JavaScript function? |
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A. To store the function name
B. To store the function code
C. To store the function parameters
D. To store the function return value
View Answer Discuss Work SpaceAnswer: option c
Explanation:
The "arguments" object is an array-like object that stores the function arguments passed to a JavaScript function.
| 10. | Which of the following is a built-in JavaScript function? |
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A. prompt()
B. alert()
C. console.log()
D. All of the above
View Answer Discuss Work SpaceAnswer: option d
Explanation:
prompt(), alert(), and console.log() are all built-in JavaScript functions.