Dynamically create properties of objects using javascript

Object-oriented JavaScript provides great flexibility when coding on the client side, and properties on Javascript objects help set values ​​that can be used within the object to manage and use data.

My understanding of properties in JavaScript is that in javascript, properties can be created by defining variables on text objects.

For example

var obj = {
   property1: '',
   property2: ''
   };

These properties can now be accessed by using

obj.property1 = 'some value';
obj.property2 = 'some other value';

Also, similarly, they can also be used within functions within the object Object.

For example:

var obj = {
   property1: '',
   property2: '',
   foo : function(){
           console.log(obj.property1);
   }};

Now that we know how to create properties on javascript objects, let’s see how to create dynamic properties on Javascript

There are two ways to do it This

Defining Array-like dynamic properties on Javascript objects

Let’s take the same example as above:

var obj = {
   property1: '',
   property2: ''
   };

In the object Objo To create a dynamic property on the object, we can do this:

obj['property_name'] = 'some_value';

What it does is that it creates a new property obj on the object and you can access it as console.log(obj.property_name);

This will output the value some_value

on the console. Use Object.defineProperty to define dynamic properties.

Example:

// Example of an object property added with defineProperty with a data property descriptor
Object.defineProperty(obj, "property3", {value : 'some value',
                           writable : true,
                           enumerable : true,
                           configurable : true});
// 'property3' property exists on object obj and its value is 37

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