Objectively Funcy

What we're doing today is writing functions that can manipulate the object passed in.

Setup

• Fork
• Clone
• Install dependencies with npm install
• Run the tests with npm run test

Tasks

• getFirstName - returns the value of the firstName property of the given person object

  • getFirstName({firstName: 'Colin', lastName: 'Jaffe'}) // -> 'Colin'
  • getFirstName({firstName: 'Petra', lastName: 'Solano'}) // -> 'Petra'

• getLastName - returns the value of the lastName property of the given person object

  • getLastName({firstName: 'Colin', lastName: 'Jaffe'}) // -> 'Jaffe'
  • getLastName({firstName: 'Petra', lastName: 'Solano'}) // -> 'Solano'

• getFullName - returns the value of the firstName property plus the lastName property with a space in the middle for the given person object

  • getFullName({firstName: 'Colin', lastName: 'Jaffe'}) // -> 'Colin Jaffe'
  • getFullName({firstName: 'Petra', lastName: 'Solano'}) // -> 'Petra Solano'

• setFirstName - changes the value of the firstName property of the given person object to the given value

  • setFirstName({firstName: 'Colin', lastName: 'Jaffe'}, 'Redacted') // -> {firstName: 'Redacted', lastName: 'Jaffe'}
  • setFirstName({firstName: 'Petra', lastName: 'Solano'}, 'Anthony') // -> {firstName: 'Anthony', lastName: 'Solano'}

• setAge - changes the value of the age property of the given person object to the given value

  • setAge({firstName: 'Colin', lastName: 'Jaffe', age: 39}, 45) // -> {firstName: 'Colin', lastName: 'Jaffe', age: 45}
  • setAge({firstName: 'Petra', lastName: 'Solano', age: 29}, 35) // -> {firstName: 'Petra', lastName: 'Solano', age: 35}

• giveBirthday - increments by 1 the age property of the given person object, or gives them an age of 1 if they don't have that property

  • giveBirthday({firstName: 'Colin', lastName: 'Jaffe', age: 39}) // -> {firstName: 'Colin', lastName: 'Jaffe', age: 40}
  • giveBirthday({firstName: 'Petra', lastName: 'Solano', age: 29}) // -> {firstName: 'Solano', lastName: 'Solano', age: 30}
  • giveBirthday({firstName: 'Baby', lastName: 'Jaffe'}) // -> {firstName: 'Baby', lastName: 'Jaffe', age: 1}

• marry - sets the marital status of both given people to true and sets each person's spouseName property to be the full name of the other

const person1 = {firstName: 'Colin', lastName: 'Jaffe', married: false}
const person2 = {firstName: 'Petra', lastName: 'Solano', married: false}
marry(person1, person2)
console.log(person1) // -> {firstName: 'Colin', lastName: 'Jaffe', married: true, spouseName: 'Petra Solano'}
console.log(person2) // -> {firstName: 'Petra', lastName: 'Solano', married: true, spouseName: 'Colin Jaffe'}

• divorce - changes the marital status to false and removes the spouseName property from both given people

const person1 = {firstName: 'Colin', lastName: 'Jaffe', married: true, spouseName: 'Petra Solano'}
const person2 = {firstName: 'Petra', lastName: 'Solano', married: true, spouseName: 'Colin Jaffe'}
divorce(person1, person2);
console.log(person1) // -> {firstName: 'Colin', lastName: 'Jaffe', married: false} 
console.log(person2) // -> {firstName: 'Petra', lastName: 'Solano', married: false}

Tips

• For getFullName, don't set a fullName property on the given object. Just give the caller of the function back a new value based on the first name and last name
• For giveBirthday, you'll need to have some way to tell if the key age is already in the given person
• For marry, you can re-use your getFullName function in order to get each person's spouseName. Just pass in the person whose fullName you want, and you'll get back your new spouseName property
• Same as above for divorce; you'll need to research a way to REMOVE the key spouseName from the given people. Simply setting the properties to undefined or null won't be sufficient