Question

JavaScript C13

Question 1 (1 point)

Which property of the Number object returns the largest positive value that JavaScript can represent?

Question 1 options:

	MIN_VALUE
	MAX_VALUE
	POSITIVE_INFINITY
	NEGATIVE_INFINITY

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Question 2 (1 point)

If a numerical operation returns a number greater than the largest possible JavaScript value, it returns

Question 2 options:

	NaN
	-NaN
	Infinity
	-Infinity

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Question 3 (1 point)

In JavaScript, NaN represents

Question 3 options:

	a value that isn’t a number
	the largest positive value that can be represented
	the smallest positive value that can be represented
	infinity

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Question 4 (1 point)

What method of the Number object returns the string for a number with base 10 as the default?

Question 4 options:

	the toString() method
	the round() method
	the toPrecision() method
	the toFixed() method

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Question 5 (1 point)

What method of the Number object returns a string with the number rounded to the specified number of decimal places?

Question 5 options:

	the toString() method
	the round() method
	the toPrecision() method
	the toFixed() method

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Question 6 (1 point)

What method of the Math object can be used to return the largest value from the values that are passed to it?

Question 6 options:

	the Math.max() method
	the Math.ceil() method
	the Math.pow() method
	the Math.abs() method

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Question 7 (1 point)

What method of the Math object can be used to generate and return a decimal number that’s greater than or equal to 0 but less than 1?

Question 7 options:

	the Math.round() method
	the Math.random() method
	the Math.floor() method
	the Math.sqrt() method

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Question 8 (1 point)

The length property of the String object returns

Question 8 options:

	the number of words in the string
	the index of the first character in the string
	the index of the last character in the string
	the number of characters in the string

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Question 9 (1 point)

What method of the String object searches the string for an occurence of the specified search string?

Question 9 options:

	the charAt() method
	the search() method
	the indexOf() method
	the substring() method

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Question 10 (1 point)

Which of the following statements is NOT a valid way to create a date object named birthday?

Question 10 options:

	var birthday = "12/2/1978";
	var birthday = new Date();
	var birthday = new Date("12/2/1978");
	var birthday = new Date(1978, 11, 2);

Answer 1

Question 1
Answer:
MAX_VALUE

Question 2
Answer:
Infinity
Question 3
Answer:
a value that isn’t a number

Question 4
Answer:
the toFixed() method

Question 5
Answer:
the toPrecision() method

Question 6
Answer:
the Math.max() method

Question 7
Answer:
the Math.random() method

Question 8
Answer:
the number of characters in the string

Question 9
Answer:
the indexOf() method
Question 10
Answer:

var birthday = "12/2/1978";