Code HS Introduction to Computer Science in JavaScript Unit 1 Test Questions and Answers Graded A+

Code HS Introduction to Computer
Science in JavaScript Unit 1 Test
Questions and Answers Graded A+
Which keyword is used to define a variable in JavaScript?

A) constant

B) define


✔✔C) var


D) static




What is JavaScript primarily used for in web development?


✔✔A) Adding interactivity to web pages


B) Defining HTML structure

C) Styling web elements

D) Managing databases




Which of the following is a correct way to display a message in the console?


✔✔A) console.log("Hello!");


B) print("Hello!");

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,C) alert("Hello!");

D) display("Hello!");




Which symbol is used to indicate a comment in JavaScript?

A) #


✔✔B) //


C) $$

D) @




What is the correct way to declare a function in JavaScript?


✔✔A) function myFunction() { }


B) def myFunction() { }

C) create function myFunction() { }

D) method myFunction() { }




Which of the following is NOT a valid JavaScript data type?

A) Number


✔✔B) Character


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, C) Boolean

D) Object




Which of these is the correct syntax for an `if` statement?


✔✔A) if (x > 5) { console.log("Greater!"); }


B) if x > 5 { console.log("Greater!"); }

C) if {x > 5} console.log("Greater!");

D) if x > 5: console.log("Greater!");




What will `console.log(typeof 42);` print?

A) "boolean"

B) "string"


✔✔C) "number"


D) "object"




Which operator is used to concatenate strings in JavaScript?


✔✔A) +


B) *


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