Object syntax: “key”: “value”
– object can have object & function as well
– array as well as they are objects

– We can access a property using . notation
– We can add or remove property anytime
– i.e. movie.date = 1988
delete movie.category
– We can add using . or [”]
– When you want to add dynamic name of property, use []

– Object from function (Factory Function)
when you need to create multiple object, create function & return
– just for chnaging name, you created two objects
– have function with parameters
– In function directly return
– If key & value is same, just have the key
– We can call this function as Factory Function

– Object using a Constructor function
– they are function, but 1st character is big
– instead of returning a object, use ‘this’
– ‘this’ is reference for using in current object
– We create using new operator, so it underatands we’re calling constructor function
– If ‘this’ is in Constructor function, ‘this’ will reference top current object.,
but if you do not use ‘new’, ‘this’ will refer to global object

– You can Enumerate on Object, using for…in on key
– for…of can used only with iterable & Object is not iterable, so use for…in
– or get Object.keys(circle) to get keys of object, which can be iterable
– you can get key & value by Object.entries(circle) & then ietrate on for…of
– you can also check if property exists in object using ‘in’

– cloning a object
– using for…in, copy each property,
– const movie1 = Object.assign({}, movie);
– {} can be empty or can have existing property
– const movie1 = { …movie };
copy all property & copy them into another object

This problem is similar to following:
What is JavaScript object,
Introduction to javascript object,
how object in javascript,
javascript object,
how to access a javascript object property,
how to clone a javascript object,
create object using constructor function,
create object using factory function,
how to iterate on object,
delete object property,
javascript tutorial,
javascript operators tutorial,
coding simplified

CHECK OUT CODING SIMPLIFIED
https://www.youtube.com/codingsimplified

I started my YouTube channel, Coding Simplified, during Dec of 2015.
Since then, I’ve published over 300+ videos. My account is Partner Verified.

★☆★ VIEW THE BLOG POST: ★☆★
http://codingsimplified.com

★☆★ SUBSCRIBE TO ME ON YOUTUBE: ★☆★

https://www.youtube.com/codingsimplified?sub_confirmation=1

★☆★ SEND EMAIL At: ★☆★
Email: thecodingsimplified@gmail.com

Original source