Both new Object() notation and Object literal({}) notations do the same thing. They initialize an object. However, the second notation can be a little different if you start adding properties to it.
Example
let a = {
name: 'Ayush'
}This initialization is equivalent to −
let a = new Object(); a.name = 'Ayush'
or
let a = {}
a.name = 'Ayush'