What does the .substring() method do in JavaScript?

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)

How do you concatenate two strings in JavaScript?

A). string1.concat(string2)

B). string1 + string2

C). string1.join(string2)

D). string1.combine(string2)

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 convert a string to uppercase in JavaScript?

A). string.toUpperCase()

B). string.uppercase()

C). string.toUppercase()

D). string.upperCase()

What is the result of 'Hello'.substring(0, 3) in JavaScript?

A). 'Hell'

B). 'Hello'

C). 'o'

D). 'llo'

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

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 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 .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