Where am I missing the input code?

Question

function contact(name, number) {
this.name = name;
this.number = number;
var a = new contact("David", 12345);
var b = new contact("Amy", 987654321);
var print1 = new print(name,number);console.log(contact.name + ': ' + contact.number);
function Print(name, number){
this.name = name;
this.number = number;
var a = new contact ("David", 12345);
var b = new contact ("Amy", 987654321);

a.print(name, number);
b.print(name, number);}
}

The expected output should be:
David: 12345
Amy: 987654321

I have tried everything and written the code as the lesson said. It tells me that everything is defined, but that I am giving no input, so there is no output.

Answer 1

Calling self function without stop condition makes it infinite loop of recursion calls. You are calling concat () within concat () function.

Again print () function calling concat () function, and concat () is calling print () function.. it's a dead lock..

What is your task here? Add description pls...