how to make javascript object code example

Example 1: object inside object javascript

var obj = {
  prop1: 5,
  obj2: {
    prop1: [3, 6, 3],
    prop2: 74,
    prop3: {
      str: "Hello World"
    }
  }
};

console.log(obj.obj2.prop3.str); //output: "Hello World"

Example 2: creating an object javascript

let obj = {
// fields
  name:"value",
  num: 123,
//methods
  foo: function(){}
  
}

Example 3: object literal javascript

// Object literals are defined using the following syntax rules:
// A colon separates property name from value.
// A comma separates each name-value pair from the next.
// There should be no comma after the last name-value pair.

// If any of the syntax rules are broken, such as a missing comma or colon or curly brace,
// an error will be thrown.

var myObject = {
    sProp: 'some string value',
    numProp: 2,
    bProp: false
};