JS and Node

What is JavaScript primarily used for in web development?

• Styling web pages

• Creating and managing databases

• Adding interactivity and dynamic behavior to web pages

• Designing graphics and layouts

How do you write a comment in JavaScript?

• <!-- This is a comment -->

• /* This is a comment */

• // This is a comment

• Both B and C

Which keyword is used to declare a variable in JavaScript?

• var

• let

• const

• All of the above

How do you create a function in JavaScript?

• function myFunction() {}

• def myFunction() {}

• create myFunction() {}

• new Function myFunction() {}

How do you call a function named myFunction?

• call myFunction();

• myFunction();

• execute myFunction();

• run myFunction();

Which operator is used for strict equality comparison in JavaScript?

• ==

• =

• ===

• !=

What is the correct way to check the data type of a variable in JavaScript?

• typeof variable;

• checkType(variable);

• getType(variable);

• variable.type;

What will console.log(3 + '3'); output?

• 6

• 33

• Error

• undefined

How do you round 4.7 to the nearest integer in JavaScript?

• Math.round(4.7);

• round(4.7);

• Math.ceil(4.7);

• Math.floor(4.7);

How do you write an IF statement in JavaScript?

• if x > y then {}

• if (x > y) {}

• if x > y {}

• if x > y do {}