What is the result of 'hello'.toUpperCase().toLowerCase() in JavaScript?
A). 'hello'
B). 'HELLO'
C). 'Hello'
D). 'hello'
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 does the .replace() method do in JavaScript?
A). Replaces a specified value with another value
B). Removes a substring
C). Splits a string into an array
D). Joins two or more strings
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)
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)
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
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
How do you check if a string starts with a specific substring in JavaScript?
A). string.startsWith(substring)
B). string.startsWithWith(substring)
C). string.beginsWith(substring)
D). string.starts(substring)