Named Arguments

In ES2015, parameter destructuring can be used to simulate named parameters.
Using named arguments is much better than using positional arguments.
Destructuring Arguments

//destructuring to assign parameters 
let myFunc = function({x,y,z}) { 
    console.log(x,y,z); 
}; 

myFunc({x:10,y:20,z:30}); //10 20 30