Strings

Question 1

Convert string to uppercase

Answer 1

str.toUpperCase()

Question 2

Convert string to lowercase

Answer 2

str.toLowerCase()

Question 3

Check if string contains substring

Answer 3

str.includes(substring)

Question 4

Find length of string

Answer 4

str.length

Question 5

Replace substring with new string

Answer 5

str.replace(“old”, “new”)

Question 6

Split string into array

Answer 6

str.split(separator)

Question 7

Extract substring

Answer 7

str.slice(start, end)

Question 8

Loop through string

Answer 8

for (let char of str) {
console.log(char)
}

Question 9

Console log with template literals

Answer 9

console.log(‘My name is ${name}’)