Which operator can be used to combine a string with a number in JavaScript?
A). +
B). -
C). *
D). /
What is the correct way to compare two strings in JavaScript for equality?
A). string1 == string2
B). string1.compare(string2)
C). string1.equals(string2)
D). string1 === string2
What does the .toLowerCase() method do in JavaScript?
A). Converts all characters to lowercase
B). Converts all characters to uppercase
C). Trims leading and trailing whitespace
D). Converts string to a boolean
How do you extract parts of a string and join them together in JavaScript?
A). string.slice(start, end)
B). string.extract(start, end)
C). string.split(start, end)
D). string.join(start, end)
Which method can you use to check if a string includes a specific substring in JavaScript?
A). .includes()
B). .contains()
C). .hasSubstring()
D). .indexOf()
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
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 .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)
How do you find the length of a string in JavaScript?
A). string.length
B). string.size
C). string.length()
D). lengthOf(string)