JavaScript/01 - JavaScript-Basics/ObjectsAndMethods.js at master · lgope/JavaScript · GitHub

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var john = {

firstName: 'John',

lastName: 'Smith',

birthYear: 1992,

family: ['Jane', 'Mark', 'Bob', 'Emily'],

job: 'teacher',

isMarried: false,

// calcAge: () => {

// this.age = 2018 - this.birthYear;

// }

calcAge: function () {

this.age = 2018 - this.birthYear;

}

};

john.calcAge();

console.log(john);

let anObject = { left: 1, right: 2 };

console.log(anObject.left);

// → 1

delete anObject.left;

console.log(anObject.left);

// → undefined

console.log("left" in anObject);

// → false

console.log("right" in anObject);

// → true

let objectA = { a: 1, b: 2 };

Object.assign(objectA, { b: 3, c: 4 });

console.log(objectA);

// → {a: 1, b: 3, c: 4}

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