Contact Manager(JS). What's wrong with my code

Question

function contact(name, number) {
this.name = name;
this.number = number;
this.print = print()
}
function print() {
document.write(a.name":"b.number);
}
var a = new contact("David", 12345);
var b = new contact("Amy", print )
a.print();
b.print();

Answer 1

Augustine Ansah Owusu
There should be space after the colon (:) and also a & b is not accessible in the function print()
function contact (name, number) {
this.print = function () {
console.log(name + ": " + number);
}
}

Answer 2

I Am Groot Thank you that help