freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/delete-properties-from-a-javascript-object.english.md

id, title, challengeType

id	title	challengeType
56bbb991ad1ed5201cd392d3	Delete Properties from a JavaScript Object	1

Description

We can also delete properties from objects like this: delete ourDog.bark;

Instructions

Delete the "tails" property from myDog. You may use either dot or bracket notation.

Tests

tests:
  - text: Delete the property <code>"tails"</code> from <code>myDog</code>.
    testString: assert(typeof myDog === "object" && myDog.tails === undefined, 'Delete the property <code>"tails"</code> from <code>myDog</code>.');
  - text: Do not modify the <code>myDog</code> setup
    testString: 'assert(code.match(/"tails": 1/g).length > 1, ''Do not modify the <code>myDog</code> setup'');'

Challenge Seed

// Example
var ourDog = {
  "name": "Camper",
  "legs": 4,
  "tails": 1,
  "friends": ["everything!"],
  "bark": "bow-wow"
};

delete ourDog.bark;

// Setup
var myDog = {
  "name": "Happy Coder",
  "legs": 4,
  "tails": 1,
  "friends": ["freeCodeCamp Campers"],
  "bark": "woof"
};

// Only change code below this line.

After Test

(function(z){return z;})(myDog);

Solution

var ourDog = {
  "name": "Camper",
  "legs": 4,
  "tails": 1,
  "friends": ["everything!"],
  "bark": "bow-wow"
};
var myDog = {
  "name": "Happy Coder",
  "legs": 4,
  "tails": 1,
  "friends": ["freeCodeCamp Campers"],
  "bark": "woof"
};
delete myDog.tails;