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prototypes's Introduction

Intro Prototypes

Directions

  • Fork this repo
  • Clone it from your github account onto your computer, and switch into the directory
    • Make a JS file for each exercise you attempt.
    • Play with your code in your snippets or console to verify it works correctly.
  • Once finished do the following:
    • git add . -A from the prototypes folder.
    • git commit -m 'solutions'
    • git push origin master
  • Submit the link to your fork in the homework form.

Goal
Try to complete the dice, starship, and radio problems.

NOTE: it's very hard to express an exhaustive description of each custom type outlined below. We encourage you to discuss the ambiguity of requirements for methods and properties. Also, for some exercises, you might need to add a property (or properties) to the prototype in order to make your method work.

Exercises

  1. Make a Dice constructor that takes a numberOfSides. Add a method called roll that randomly returns a number from 1 up to the numberOfSides.
  • Modify your roll method to record the returned side in a lastRoll property.
  1. Make a Starship constructor that takes a model and ownerName.
  • Give your StarShip a setTopSpeed method and a getTopSpeed method that let you change and read the topSpeed. Assume topSpeed is just a number.
  • Give your Starship an accelerateTo method that sets currentSpeed to some number, unless that number is greater than its topSpeed.
  1. Make a Radio constructor that takes in an ownerName and a signalType ("AM" or "FM").
  • Add a setStation method to your radio that allows the following ranges for a station property:
    • 535 to 1705 for "AM".
    • 88 to 108 for "FM".
  • Add a listen method that returns the following:
    • "distorted music" for "AM".
    • "clear music" for "FM".
  1. Make a Mailer constructor that takes a from email address, and has currentMessage set to an empty object, as well as a sentMessages array.
  • Add a setSendTo method that sets currentMessage.sendTo to be a specified email.
  • Add a setSubject method that sets currentMessage.subject to be a specified subject.
  • Add a send method that sets currentMessage.from to be this.from, pushes currentMessage into sentMessages, and sets currentMessage to be a new object.
    • Modify send so that it checks if currentMessage has both a sendTo and subject before pushing to sentMessages.

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