Question 1

All literal strings and string variables in JavaScript are represented by a(n)____________________ class, which contains methods for manipulating text strings.

Accepted Answer

The answer of All literal strings and string variables in...

Question 2

Match between columns
                        Premises: Compares strings according to the particular sort order of a language or country
Text contained within double or single quotation marks
A standardized set of characters from many of the world's languages
Metacharacter that specifies the quantity of a match
Special character that defines pattern matching rules in a regular expression
Separates alternate sets of substrings in a regular expression
Adds one or more elements to the end of an array
Removes the last element from the end of an array
Converts a JSON string value to an object
Combines array elements into a string

Accepted Answer

The Answer of join() and localeCompare()method and metacharacter and pop() is...

Question 3

The ____ method adds one or more elements to the end of an array.
A) pop()
B) push()
C) shift()
D) unshift()

Accepted Answer

The push() method is used to add one or more elements to the end of an array.

Question 4

To sort elements of an array alphabetically, you use the ____ method.
A) arrange()
B) order()
C) list()
D) sort()

Accepted Answer

The sort() method is used to sort elements of an array in ascending order. When applied to an array of strings, it sorts them alphabetically.

Question 5

To convert a JavaScript object to a JSON string, you use the ____ method.
A) convertToString()
B)json()
C)parse()
D)stringify()

Accepted Answer

To convert a JavaScript object to a JSON string, you use the JSON.stringify() method. This method takes an object and returns a string in JSON format.

Question 6

List and describe three metacharacters that you can use with JavaScript regular expressions.

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The answer of List and describe three metacharacters that you...

Question 7

What are the toString()and toLocaleString()methods used for, and what is the difference between them?

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Question 8

The ____________________ method of the String class creates a new string with the first instance of a specified pattern replaced with the value of the text argument.

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The answer of The ____________________ method of the String class...

Question 9

When applied to text strings, the term ____________________ refers to the act of extracting characters or substrings from a larger string.

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The answer of When applied to text strings, the term...

Question 10

The ____ method removes and returns the first element from the beginning of an array.
A) split()
B) unshift()
C) shift()
D) slice()

Accepted Answer

The shift() method removes and returns the first element from the beginning of an array. This is the best choice as the other options either split the array into multiple parts or return a copy of a portion of the array. The unshift() method adds an element to the beginning of an array, while the slice() method returns a copy of a portion of an array.

Question 11

You use the ____ method of the String class to split a string into an indexed array.
A) toArray()
B) slice()
C) split()
D) shift()

Accepted Answer

The split() method is used to split a string into an indexed array based on a specified separator. It is the most appropriate method for the given task. The other options (toArray(), slice(), shift()) are not used for splitting a string into an array.

Question 12

Provide two different regular expressions that return true only when tested against a string consisting of exactly 5 characters.

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The answer of Provide two different regular expressions that return...

Question 13

Explain how to change the case of a variable's valueusing the toLowerCase() or toUpperCase()method.

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The answer of Explain how to change the case of...

Question 14

Explain the difference between the shift()and unshift()methods of the Array object.

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The answer of Explain the difference between the shift()and unshift()methods...

Question 15

_________________________ are patterns that are used for matching and manipulating strings according to specified rules.

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The answer of _________________________ are patterns that are used for...

Question 16

__________ is a data format that represents a JavaScript object as a string.

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The answer of __________ is a data format that represents...

Question 17

What is the primary difference between the search()method and the indexOf()method?

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The answer of What is the primary difference between the...

Question 18

How can you combine text strings with JavaScript?

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The answer of How can you combine text strings with...

Question 19

How can you match any metacharacters as literal values in a regular expression?

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The answer of How can you match any metacharacters as...

Question 20

What is the difference between the slice()and substring()methods?

Accepted Answer

The answer of What is the difference between the slice()and...

Quiz 8: Manipulating Data in Strings and Arrays

All literal strings and string variables in JavaScript are represented by a(n)____________________ class, which contains methods for manipulating text strings.

Match each statement below with correct item:

The ____ method adds one or more elements to the end of an array.

To sort elements of an array alphabetically, you use the ____ method.

To convert a JavaScript object to a JSON string, you use the ____ method.