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 .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
What is the result of 'Hello'.substring(0, 3) in JavaScript?
A). 'Hell'
B). 'Hello'
C). 'o'
D). 'llo'
Which method can you use to check if a string includes a specific substring in JavaScript?
A). .includes()
B). .contains()
C). .hasSubstring()
D). .indexOf()
How do you concatenate two strings in JavaScript?
A). string1.concat(string2)
B). string1 + string2
C). string1.join(string2)
D). string1.combine(string2)
What is the result of 'apple'.charAt(2) in JavaScript?
A). 'p'
B). 'l'
C). 'a'
D). 'pp'
How do you get the index of the first occurrence of a specified substring in a string?
A). string.indexOf(substring)
B). string.index(substring)
C). substring.positionIn(string)
D). string.search(substring)
Which operator can be used to combine a string with a number in JavaScript?
A). +
B). -
C). *
D). /
What does the + operator do with strings?
A). Concatenates strings
B). Compares strings
C). Trims strings
D). Converts strings to uppercase
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)