JAVASCRIPT

object js

let object = {
	name : "Petya",
  	age : 15
};

// another way
let object = new Object();
object["name"] = "Petya";
object["age"] = 15;

// old way
var object = new Object()
object.name = "Petya";
object.age = 15;

js objects

// To make an object literal:
const dog = {
    name: "Rusty",
    breed: "unknown",
    isAlive: false,
    age: 7
}
// All keys will be turned into strings!

// To retrieve a value:
dog.age; //7
dog["age"]; //7

//updating values
dog.breed = "mutt";
dog["age"] = 8;

ways of defining object js

1) Object Literal
	const obj = {
    	name: "Ram",
      	age: "20"
    }
2) Constructor Function or ES6- Class
   const a = new Person("Ram", "25") //given Person is an existing function or class
3) Object.create method
	const ram = Object.create(Person); //given person is an existing object

[object Object]

[object Object]
/* 
	This means that your programming interpreter doesn't support showing
	JSON parsers somewhere, and has resorted to the default object representation
	behavior (see below).
	Behavior: [object CLASS]
	Since it's an object, well: [object Object]
	This is most commonly seen in a depraved, deranged state in objects
    ingrained into text. We still haven't really devised a prophecy
    about why it still happens in some places. Either JavaScript likes to
    be vexing by being "open" aka adding unnecessary steps, or JavaScript
    has something like security issues related to its code/some other
    predicament retaining and pertaining.
*/

javascript object

/*
An object is made of key value pairs. Keys can be strings 
(which don't require quotes), array with a string, or symbols. Values can be arrays,
objects, numbers etc
*/

let testSymbol = Symbol('item number 3')

const obj = {
	item1: 1,
    "item number 2": 2,
    testSymbol: 3,
  	['a']: 4
}

// Another way of creating an object:
const obj = new Object();
obj.name = 'John'

// To access values, you can use dot notation or bracket notation. 
// Both do the same thing, bracket notion is useful for multispace keys,
// keys with dashes, or accessing values using variables
> obj.item1
> obj['item number 2']

> let b = 'item1'
  obj[b]
  // The following would NOT work and would return undefined:
  obj.b

// Checking exsistence of keys in object:
obj.toString ----- checks values of object and whatever object inherits from
> returns true

obj.hasOwnProperty('toString') ----- checks values of object only. Do this instead of checking like: (obj.name !== undefined)
> returns false


// Short hand key assignment:
const name = 'John'
const obj2 = {
    // this is short hand that automatically sets the key to be 'name',
    // and it's value to be 'John'
	name, 
}

// Constructor objects:
function Obj(name, age){
	this.name = name
  	this.age = age
}

const person = new Obj('john', 1)

// adding functions, couple ways:
const obj = {
  	name: 'Mike',
  	number: 4421,
	sayHi: () => console.log('hi'),
  	sayBye() {
    	console.log('say bye')
    },
    // getter function to get values from object. Has different usecases, but the same as doing obj.number
  	get getNumber(){
    	return this.number
    }
    // setter function to set values in object. Has different usecases, but the same as doing obj.number = 152
    set setNumber(num){
    	this.number = num
    }
}

obj.sayHi()
obj.sayBye()
obj.getNumber //Note how it's being accessed like a standard property, and not a function
obj.setNumber //Note how it's being accessed like a standard property, and not a function

javaScript object

var emp = {
name: "khan",
age: 23
};

object JavaScript

//create an obect of a scary housekeeper
var houseKeeper = {//the following are all properties
    name: "Moira O'Hara",//creating variables and assigning
    experienceInYears: 9,
    everBeenFired: false,
    priorJobs: ['Grand Budapest Hotel', 'The Overlook', 'Pinewood Hotel', 'Slovakian Hostel'],
    dateHired:  new Date('01/13/2022'),
    currentEmployee: true,
    dateOfTermination: new Date(0),
    reasonForTermination: '',    
};
//using dot notation to edit object
houseKeeper.everBeenFired = true;
houseKeeper.currentEmployee = false;
houseKeeper.dateOfTermination = new Date('10/3/2022');
houseKeeper.reasonForTermination = ['anger issues', 'violation of customer privacy']

//using dot notation to access object
console.log("Date of Hire : ", houseKeeper.dateHired)
console.log("House Keeper : ", houseKeeper.name)
console.log("Current Employee? : ", houseKeeper.currentEmployee)
console.log("Date of Termination : ", houseKeeper.dateOfTermination)
console.log("Reason for Termination : ", houseKeeper.reasonForTermination)

javascript object

[object Object]
Object { }
{ }

object object js

var obj = new Object();

object

{
  "key": "ctrl+shift+r ctrl+e",
  "command": "editor.action.codeAction",
  "args": {
    "kind": "refactor.extract.function"
  }
}

javasript object

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

javascript object

let person = {
    firstName: 'John',
    lastName: 'Doe'
};Code language: JavaScript (javascript)

JavaScript Object

const student = {
    firstName: 'ram',
    lastName: null,
    class: 10
};

javascript object

const obj = {
    name: "Mon contenu",
    id: 1234,
    message: "Voici mon contenu",
    author: {
        name: "John"
    },
    comments: [
        {
            id: 45,
            message: "Commentaire 1"
        },
        {
            id: 46,
            message: "Commentaire 2"
        }
    ]
};

js object

'use strict';

var obj = {
  a: 10
  b:20
};

Object.defineProperty(obj, 'b', {
  get: () => {
    console.log(this.a, typeof this.a, this); // undefined 'undefined' Window {...} (or the global object)
    return this.a + 10; // represents global object 'Window', therefore 'this.a' returns 'undefined'
  }
});

object

Remove the constraint on object before deleting your field 

The constraint is typically created automatically by the DBMS (SQL Server).

To see the constraint associated with the table

in SSMS -> expand the table attributes in Object explorer -> category Constraints -> right click on constraint and click delete 

object

{
  "error": {
    "code": 403,
    "message": "YouTube Data API v3 has not been used in project 300294518029 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/youtube.googleapis.com/overview?project=300294518029 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.",
    "errors": [
      {
        "message": "YouTube Data API v3 has not been used in project 300294518029 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/youtube.googleapis.com/overview?project=300294518029 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.",
        "domain": "usageLimits",
        "reason": "accessNotConfigured",
        "extendedHelp": "https://console.developers.google.com"
      }
    ],
    "status": "PERMISSION_DENIED",
    "details": [
      {
        "@type": "type.googleapis.com/google.rpc.Help",
        "links": [
          {
            "description": "Google developers console API activation",
            "url": "https://console.developers.google.com/apis/api/youtube.googleapis.com/overview?project=300294518029"
          }
        ]
      },
      {
        "@type": "type.googleapis.com/google.rpc.ErrorInfo",
        "reason": "SERVICE_DISABLED",
        "domain": "googleapis.com",
        "metadata": {
          "service": "youtube.googleapis.com",
          "consumer": "projects/300294518029"
        }
      }
    ]
  }
}

js object

const person = {
    firstName: 'John',
    age: 30,
    greet() {//method
        console.log('Hi, I am ' + this.name);
    },
    age(){//method
        console.log('I am ' + this.age + ' years old');
    }
}

person.lastName = 'Doe';//add property to object

console.log(person.lastName);// output: Doe
// Calling a method
person.greet();// output: Hi, I am Doe
person.age();// output: I am 30 years old

javaScript object

var emp = {
name: "khan",
age: 23
};

javaScript object

var emp = {
name: "khan",
age: 23
};

object

{
  "jobTitle": ""
}

js object

var person = {
  "name" : "Mrs. White"
};

object

//// Write a function that takes an array of objects (courses) and returns object of 2 new arrays // first one is containing the names of all of the courses in the data set. // second one is containing the names of all the students
const getInfo = (arr) => {
  let coursesName = [];
  let studentsName = [];
  // write your code here

  return { coursesName, studentsName };
};

//if you find this answer is useful ,
//upvote ⇑⇑ , so can the others benefit also . @mohammad alshraideh ( ͡~ ͜ʖ ͡°)

object

An object-coordinate model that is rendered as a collection of primitives.