freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/testing-objects-for-properties.md

id, title, challengeType, forumTopicId, dashedName

id	title	challengeType	forumTopicId	dashedName
567af2437cbaa8c51670a16c	Testing Objects for Properties	1	18324	testing-objects-for-properties

--description--

Sometimes it is useful to check if the property of a given object exists or not. We can use the .hasOwnProperty(propname) method of objects to determine if that object has the given property name. .hasOwnProperty() returns true or false if the property is found or not.

Example

const myObj = {
  top: "hat",
  bottom: "pants"
};

myObj.hasOwnProperty("top");
myObj.hasOwnProperty("middle");

The first hasOwnProperty returns true, while the second returns false.

--instructions--

Modify the function checkObj to test if an object passed to the function (obj) contains a specific property (checkProp). If the property is found, return that property's value. If not, return "Not Found".

--hints--

checkObj({gift: "pony", pet: "kitten", bed: "sleigh"}, "gift") should return the string pony.

assert(
  checkObj({ gift: 'pony', pet: 'kitten', bed: 'sleigh' }, 'gift') === 'pony'
);

checkObj({gift: "pony", pet: "kitten", bed: "sleigh"}, "pet") should return the string kitten.

assert(
  checkObj({ gift: 'pony', pet: 'kitten', bed: 'sleigh' }, 'pet') === 'kitten'
);

checkObj({gift: "pony", pet: "kitten", bed: "sleigh"}, "house") should return the string Not Found.

assert(
  checkObj({ gift: 'pony', pet: 'kitten', bed: 'sleigh' }, 'house') ===
    'Not Found'
);

checkObj({city: "Seattle"}, "city") should return the string Seattle.

assert(checkObj({ city: 'Seattle' }, 'city') === 'Seattle');

checkObj({city: "Seattle"}, "district") should return the string Not Found.

assert(checkObj({ city: 'Seattle' }, 'district') === 'Not Found');

checkObj({pet: "kitten", bed: "sleigh"}, "gift") should return the string Not Found.

assert(checkObj({ pet: 'kitten', bed: 'sleigh' }, 'gift') === 'Not Found');

--seed--

--seed-contents--

function checkObj(obj, checkProp) {
  // Only change code below this line
  return "Change Me!";
  // Only change code above this line
}

--solutions--

function checkObj(obj, checkProp) {
  if(obj.hasOwnProperty(checkProp)) {
    return obj[checkProp];
  } else {
    return "Not Found";
  }
}