I created a contact object and added a print method to it.. the problem is I get an error code saying no input

Question

This is what the code looks like
function contact(name, number) {
this.name = name;
this.number = number;
this.print = function()
{this.name = name;
this.number = number;
console.log(name, number )}
}

var a = new contact("David", 12345);
var b = new contact("Amy", 987654321);

a.print();
b.print();

Answer 1

Works fine for me

Answer 2

There was silly mistake you done. I fixed it :)

function contact(name, number) {
this.name = name;
this.number = number;
this.print = function()
{this.name = name;
this.number = number;
console.log(name+": "+number )}
}

var a = new contact("David", 12345);
var b = new contact("Amy", 987654321);

a.print();
b.print();