JavaScript Basics

Which of the following will correctly comment the text?

• // "the text"
• /"the text"/
• */"the text"/*
• \\"the text

Which of the following is NOT a comparative operator?

• !==
• >=
• ===
• <==

What syntax follows after an if statement?

• parenthesis
• curly braces
• a colon
• square brackets

Which of the following statements returns 'false'?

• 'myName'.length > 2
• 3 * 4 < 15
• 4 / 2 == 2
• 'inputControl'.length < 4

Which statement returns the value of 2?

• 7 + 3 / 5
• 'hi'.length - 1 * 2
• (3 + 1) / 'hi'.length
• 4 + (4 / 8)

What best describes a variable?

• they allow the user to change language settings
• they allow the user to change the variable's data type
• they allow the user to save and call values
• they allow the user to declare a new data type

Which of the following is the correct way to declare a variable?

• variable myName
• var myName
• MY_NAME
• VAR myName

Which of the following best describes what a function is used for?

• they create new variable commands
• they are used for difficult math formulas
• they are reusable pieces of code that can be called any time in the program
• they allow for the use of mathematical operators

What best describes the function of a for loop?

• it loops through a block of code for a finite amount of times
• it looks for a loop in a block of code
• it loops through code only within a function
• it loops through a block of code forever

How are while loops different from for loops?

• the start of a loop is not predefined in a while loop
• while loops cannot use comparison operators
• the end of the loop is not predefined
• the control of the loop is not predefined in for loops