Question

I have the following Javascript:

function TestModel()
{
        this.name = "Testvalue";
        this.id = 0;
}

var test = new TestModel();
alert(test.name);

If I want to initialize an object with different parameters without the use of a constructor I would need to call the following code:

var test = new TestModel();
test.name = "other value";
test.id = 5;
alert(test.name);

What I would like to do is something similar to the C# style:

class TestModel
{
    public string name = "Testvalue";
    public int id = 0;
}

TestModel test = new TestModel() { name = "other value", id = 5 };
System.Windows.MessageBox.Show(test.name);

But if I try something like that in javascript it won’t work.

In short: I am trying to init a object in 1 line without the use of a constructor. Is this possible in javascript?

Answer 1

This looks most like the C# syntax:

function TestModel(init)
{
   init = init || {}; 
   this.name = init.name || "Testvalue";
   this.id = init.id || 0;
}

var test1 = new TestModel( { name:'testvalue1',id:1 } );
var test2 = new TestModel( { name:'testvalue2',id:2 } );