kieha/string-class

Andela JS Checkpoint 2

string-class

Checkpoint Explanation

This is an extension of the Javascript String class using Prototype Oriented Programming.

The following are the methods involved:

• hasVowels

This method evaluates to true or false depending on whether the input string has a vowel(s).

'vowels'.toVowels() === true
'n0 vwls'.toVowels() === false

• toUpper

This method returns the input string with all characters in upper case.

'uppercase'.toUpper() yields 'UPPERCASE'

• toLower

This method returns the input string with all characters in lower case.

'LOWERCASE'.toLower() yields 'lowercase'

• ucFirst

This method returns the input string with the first character in upper case.

'titlecase'.ucFirst() yields 'Titlecase'

• isQuestion

This method evaluates to true or false depending on whether the input string is a question (has a question mark at the end).

'Is this a question?'.isQuestion() === true
'This is not a question'.isQuestion() === false

• words

This method returns an array of words from the input string.

'an array of words'.words() yields ['an', 'array', 'of', 'words']

• wordCount

This method returns the number of words in the input string.

'how many words do I have?'.wordCount() === 6

• toCurrency

This method returns a currency representation of the input string.

'1234567.12'.toCurrency() yields '1,234,567.12'

• fromCurrency

This method returns a number representation of the currency string.

'123,456,789.00'.fromCurrency() yields 123456789

Usage

• Clone the repository to your machine.
• cd into the project.
• Start up a node terminal instance.
• Type in require('../src/string-class') to access the module.
• Use the methods as above.

Running The Tests

• Change directory to the root of the project.
• Run npm install to install project dependencies.
• Run npm test to run the tests.