js function params.md

My thought has always been: 3 method parameters is too many. So, the following method call:

sayHi(this.props.firstname, this.props.lastnane this.state.message)

...to this:

sayHi({
   firstName: this.props.firstname,
   lastname: this.props.lastname,
   message: this.state.message
})

And the actual function signature would change from:

function sayHi(firstname, lastname, message)

...to:

function sayHi({firstname, lastname, message})