Question 1

How is the JavaScript "symbol" primitive data type unique?

A. It represents textual information B. It is immutable and unique C. It holds numeric values D. It denotes a deliberate absence of any object value

Question 2

Which JavaScript primitive data type is used to represent binary data?

A. Boolean B. String C. ArrayBuffer D. Symbol

Question 3

Which of the following is a valid JavaScript primitive data type for storing whole numbers?

A. String B. Boolean C. Number D. Array

Question 4

Which of the following is the correct syntax to print a page using JavaScript?

A. window.print(); B. browser.print(); C. navigator.print(); D. document.print();

Question 5

Which of the following function of Number object returns a string value version of the current number?

A. toString() B. toFixed() C. toLocaleString() D. toPrecision()

Question 6

What will be the output of the following JavaScript code? <pre class = "prettyprint"><xmp> const a = 11; const a = 12; </xmp></pre>

A. 10 B. 12 C. Undefined D. Error

Question 7

What does the JavaScript "typeof" operator return for a variable of the "undefined" primitive data type?

A. "number" B. "undefined" C. "string" D. "boolean"

Question 8

Which of the following function of Array object represents the source code of an object?

A. toSource() B. splice() C. toString() D. unshift()

Question 9

What will be the output of the following JavaScript code? <pre class = "prettyprint"><xmp> let a = 12; { var a = 12; console.log(a); } </xmp></pre>

A. 10 B. 12 C. Undefined D. Error

Question 10

Which of the following function of String object causes a string to be displayed in the specified size as if it were in a <font size = 'size'> tag?

A. fixed() B. fontcolor() C. fontsize() D. bold()