js object

1//checks if is object, null val returns false
2function isObject(val) {
3    if (val === null) { return false;}
4    return ( (typeof val === 'function') || (typeof val === 'object') );
5}
6var person = {"name":"Boby Snark"};
7isObject(person);//true

1var	person = {
2	first_name : "Marty",
3  	last_name : "Mcfly",
4	born : 1968,
5	died : 1933,
6    lovers: ["Jennifer Parker","Baines McFly"]
7};

1let object = {
2  'key1': 'value1',
3  'key2': 'value2',
4  'keyn': 'valuen',
5};
6console.log(object);

1let car = {
2  		name: "BMW",
3  		colour: "black",
4  		year: "2020",
5  		owner: {
6		names = ["Andy" , "Steve" , "Tony" ]
7		}
8};

1person = {
2    'name':'john smith'
3    'age':41
4};
5
6console.log(person);
7//this will return [object Object]
8//use
9console.log(JSON.stringify(person));
10//instead

1'use strict';
2
3var obj = {
4  a: 10
5  b:20
6};
7
8Object.defineProperty(obj, 'b', {
9  get: () => {
10    console.log(this.a, typeof this.a, this); // undefined 'undefined' Window {...} (or the global object)
11    return this.a + 10; // represents global object 'Window', therefore 'this.a' returns 'undefined'
12  }
13});
14