The Front-End Web Developer Bootcamp - HTML, CSS, JS, and React - String Methods - Part 3

This lecture delves into various JavaScript string methods, including trim, charAt, charCodeAt, and more. It explains how to manipulate strings by trimming spaces, finding character positions, and converting between characters and ASCII codes. The session also covers methods like concat, split, repeat, slice, substr, substring, toString, and valueOf, demonstrating their use in string manipulation and conversion. These methods are essential for handling strings in JavaScript, especially in larger projects where precise string operations are required.

What is the primary use of the trim method in string manipulation?

• To add spaces to a string

• To remove spaces from the beginning and end of a string

• To convert a string to uppercase

• To find the length of a string

Which method would you use to find the character at a specific index in a string?

• concat

• indexOf

• charAt

• substring

What does the character code at method return?

• The ASCII code of the character at a specified index

• The character at a specified index

• The first character of the string

• The length of the string

How can you convert an ASCII code to its corresponding character?

• Using split

• Using charAt

• Using toString

• Using fromCharCode

Which method is used to join two strings together?

• repeat

• concat

• slice

• split

What is the purpose of the split method?

• To join two strings

• To convert a string into an array

• To repeat a string multiple times

• To find the length of a string

How does the repeat method function?

• It repeats a string a specified number of times

• It splits a string into an array

• It joins two strings together

• It converts a string to uppercase

What is the difference between slice and sub STR methods?

• Both include the last parameter

• Neither includes the last parameter

• slice includes the last parameter, sub STR does not

• sub STR includes the last parameter, slice does not

What does the toString method do?

• Splits a string into an array

• Converts a string to a number

• Finds the length of a string

• Converts a number to a string

Which method is used to get the primitive value of a string object?

• toString

• charAt

• valueOf

• concat