The following code should look familiar, we’re creating an object and assigning a property.
function Person(id) {
var self = this;
self.id = id;
}
var instance = new Person(1);
One challenge with this approach is that as you add properties remembering their order can become a mental task.
function Person(id, firstName, lastName, phoneNumber) {
var self = this;
self.id = id;
self.firstName = firstName;
self.lastName = lastName;
self.phoneNumber = phoneNumber;
}
var instance = new Person(1, 'Bill', 'Gates', '212-555-1234');
An alternate approach to consider is to use jQuery’s extend function (or Underscore, AngularJS, etc) which enables passing named parameters.
function Person(data) {
var self = this;
$.extend(self, data);
}
var instance = new Person({
id: 1,
firstName: 'Bill',
lastName: 'Gates',
phoneNumber: '212-555-1234'
});
A nice by-product of this approach is that it makes it simple to serialize/de-serialize the object, for example to store it to Local Storage.
var jsonString = JSON.stringify(instance); // write to storage // ... // read from storage var instance = new Person(JSON.parse(jsonString));
Hillel Coren 