What does the + operator do with strings?
A). Concatenates strings
B). Compares strings
C). Trims strings
D). Converts strings to uppercase
What is the result of 'apple'.charAt(2) in JavaScript?
A). 'p'
B). 'l'
C). 'a'
D). 'pp'
How do you convert a string to uppercase in JavaScript?
A). string.toUpperCase()
B). string.uppercase()
C). string.toUppercase()
D). string.upperCase()
What does the .substring() method do in JavaScript?
A). Extracts characters between two indices
B). Trims whitespace from the beginning
C). Converts string to an array
D). Compares two strings
What is the result of 'Hello'.substring(0, 3) in JavaScript?
A). 'Hell'
B). 'Hello'
C). 'o'
D). 'llo'
How do you extract a part of a string and replace it with another substring in JavaScript?
A). string.replace(oldSubstring, newSubstring)
B). string.extractReplace(old, new)
C). string.modify(old, new)
D). string.substitute(old, new)
What is the result of 'hello'.toUpperCase().toLowerCase() in JavaScript?
A). 'hello'
B). 'HELLO'
C). 'Hello'
D). 'hello'
What does the .concat() method do in JavaScript?
A). Concatenates two or more strings
B). Compares two strings
C). Converts a string to lowercase
D). Finds a substring in a string
How do you trim whitespace from the beginning and end of a string in JavaScript?
A). string.trim()
B). trimString(string)
C). string.strip()
D). trim(string)
What is the result of '5' + 3 in JavaScript?
A). '53'
B). 8
C). 53
D). '5 3'