SEW | JavaScript Basics

User Story 1

As a bank employee, I want to use a coin converter app, so that I can save time and serve more customers.

Acceptance Criteria

• the function convert(amount) is available, which converts a given amount of cent into as few as possible coins
• the result is an object, which shows the amount of coins per value, e.g. { '100': 1, '50': 1, '20': 2, '5': 1, '2': 2 }
• only used values are represented within the resulting object

User Story 2

As a security expert I want to encrypt and decrypt strings, so that I can have a secure conversation with my counterpart.

Acceptance Criteria

• A function rot13(text) is available.
• The given string is encrypted using the ROT13 method.
• Upper- and lower-case are kept.
• Letters and signs outside of the English alphabet are kept.
• If the argument is no string, it needs to be converted into a string.
• If the function is used twice on a string, it should produce the same string again.

User Story 3

As a content creator I need an easy to use system to sort an array in lexical order, so that I can created sorted list much faster.

Acceptance Criteria

• A function that takes an array of string as a parameter is available.
• The result is an array consisting of the same strings as the input array, only sorted in lexical order
• Hint: take a look at the string method: localeCompare()

User Story 4

As a developer I want to filter an array, so that only even numbers are in the result.

Acceptance Criteria

• A function that takes an array of numbers as a parameter is available.
• The result is an array consisting only of even numbers

User Story 5

As a software tester I want to test certain functions, so that I can be sure that they produce the right result.

Acceptance Criteria

• A function test(fu, arg, exp) is available, where fu is the function which needs to be tested, arg are the arguments for fu, and exp is the expected return value.
• The function test calls the function fu using arg as argument.
• The return value of fu is compared with exp and if they match true is returned, otherwise false is returned.

User Story 6

As a cool developer I want to create generic code, so that I can be minimize my coding effort.

Acceptance Criteria

• A function generate(op) is available.
• The parameter op can be one of the four basic mathematic operations +, -, * or /.
• generate returns a new function, which then can be called with two numbers as parameters.
• The given mathematic operation is performed on the two numbers.
• Example:
  • const mult = generate('*')
  • console.log(mult(3, 4)) // the value is 12 printed on the console

Skill(s)

• JavaScript Basics 4th Grade