PreTrainingJavaScript

Which of the following is NOT one of the three keywords used to create a variable in JavaScript?

• var

• int

• let

• const

What is the JavaScript function used to print to the console?

• console.log();

• System.out.println();

• cout << "Hello World!";

is JavaScript case sensitive?

• Yes

• No

let x = 5;

In the above statement, what is the data type of x?

• Object

• number

• int

• String

let x = "5";

In the above statement, what is the data type of x?

• boolean

• number

• undefined

• String

5 == "5"

what does the above expression evaluate to?

• True

• False

5 === "5"

what does the above expression evaluate to?

• True

• False

Choose the statement that correctly declares and initializes an array

• let array;

• let a = [1,2,3];

• let a = {1,2,3};

What does the pictured loop return?

• "ThreeString"

• "Three"

• nothing