HTML CSS and JavaScript for Beginners - A Web Design Course - JavaScript String Methods

The video tutorial covers string methods in programming, focusing on creating strings, determining their length, and finding specific content within them using methods like indexOf, lastIndexOf, and search. It explains how spaces are counted as characters and demonstrates how to locate the first and last occurrences of a substring. An exercise is provided to practice checking if a word exists in a string, using functions and conditions to output results. The tutorial emphasizes the importance of understanding string manipulation for effective programming.

What happens to the length of a string when spaces are added?

• The length increases.

• The length decreases.

• The length remains the same.

• The length becomes zero.

Which method is used to find the first occurrence of a substring in a string?

• lastIndexOf

• find

• indexOf

• search

What does the 'lastIndexOf' method do?

• Finds the first occurrence of a substring.

• Finds all occurrences of a substring.

• Finds the last occurrence of a substring.

• Finds the middle occurrence of a substring.

How can you specify a starting position for 'indexOf'?

• By using 'indexOf' with a second argument.

• By using 'lastIndexOf' with a second argument.

• By using 'find' with a second argument.

• By using 'search' with a second argument.

What does the 'search' method do?

• Finds the last occurrence of a substring.

• Finds the middle occurrence of a substring.

• Finds the first occurrence of a substring.

• Finds all occurrences of a substring.

What value is returned if a substring is not found using 'indexOf'?

• undefined

• null

• -1

• 0

What is the purpose of the function created in the last section?

• To find the length of a string.

• To check if a word exists in a string.

• To convert a string to uppercase.

• To replace a word in a string.