0x13-javascript_objects_scopes_closures

0x13. JavaScript - Objects, Scopes and Closures

This directory contains javaScript scripting based on classes, scopes and closures.

Tasks

• 0-rectangle.js - Contains empty class Rectangle that defines a rectangle.

• 1-rectangle.js - Writes a class Rectangle that defines a rectangle:

  • The class notation must be used in defining your class
  • The constructor takes 2 arguments w and h
  • Initialize the instance attribute width with the value of w
  • Initialize the instance attribute height with the value of h

• 2-rectangle.js - Writes a class Rectangle that defines a rectangle:

  • The class notation must be used for defining your class
  • The constructor takes 2 arguments w and h
  • Initialize the instance attribute width with the value of w
  • Initialize the instance attribute height with the value of h
  • If w or h is equal to 0 or not a positive integer, an empty object is created

• 3-rectangle.js - Writes a class Rectangle that defines a rectangle:

  • The class notation must be used for defining your class
  • The constructor takes 2 arguments w and h
  • Initialize the instance attribute width with the value of w
  • Initialize the instance attribute height with the value of h
  • If w or h is equal to 0 or not a positive integer, an empty object is created
  • Creates an instance method called print() that prints the rectangle using the character X

• 4-rectangle.js - Writes a class Rectangle that defines a rectangle:

  • The class notation must be used for defining your class
  • The constructor takes 2 arguments w and h
  • Initialize the instance attribute width with the value of w
  • Initialize the instance attribute height with the value of h
  • If w or h is equal to 0 or not a positive integer, an empty object is created
  • Creates an instance method called print() that prints the rectangle using the character X
  • Creates an instance method called rotate() that exchanges the width and the height of the rectangle
  • Creates an instance method called double() that multiples the width and the height of the rectangle by 2

• 5-square.js - Writes a class Square that defines a square and inherits from Rectangle of 4-rectangle.js:

  • The class notation must be used for defining your class and extends
  • The constructor takes 1 argument: size
  • The constructor of Rectangle is be called (by using super())

• 6-square.js - Writes a class Square that defines a square and inherits from Square of 5-square.js.:

  • The class notation must be used for defining your class and extends
  • Creates an instance method called charPrint(c) that prints the rectangle using the character c
  • If c is undefined, the character X is used

• 7-occurrences.js - Writes a function that returns the number of occurrences in a list:

  • Prototype: exports.nbOccurences = function (list, searchElement)

• 8-esrever.js - Writes a function that returns the reversed version of a list:

  • Prototype: exports.esrever = function (list)
  • The built-in method reverse is not used.

• 9-logme.js - Writes a function that prints the number of arguments already printed and the new argument value. (see example below)

  • Prototype: exports.logMe = function (item)
  • Output format: :

• 10-converter.js - Writes a function that converts a number from base 10 to another base passed as argument:

  • Prototype: exports.converter = function (base)

• 100-map.js - Writes a script that imports an array and computes a new array.

  • The script imports list from the file 100-data.js
  • A map is used.
  • A new list is created with each value equal to the value of the initial list, multipled by the index in the list
  • Both the initial list and the new list are printed

• 101-sorted.js - Writes a script that imports a dictionary of occurrences by user id and computes a dictionary of user ids by occurrence.

  • The script must import dict from the file 101-data.js
  • In the new dictionary:
    • A key is a number of occurrences
    • A value is the list of user ids
  • Prints the new dictionary at the end

• 102-concat.js - A script that concats 2 files.

  • The first argument is the file path of the first source file
  • The second argument is the file path of the second source file
  • The third argument is the file path of the destination