JavaScript syntax

Question

I keep finding some JavaScript that looks like the example below. Can someone explain this as I have not seen JavaScript written like this before.

What is "SomethingHere" and the colon represent? I'm used to seeing function myFunction() but not what is shown below.

 SomethingHere: function () {

              There is code here that I understand.
         }

Answer 1

It's object literal notation. It's a way of declaring objects using the following form:

{
    propertyName: value
}

So for example:

var obj = {
    fruit: "apple",
    id: 123,
    sayHello: function() { return "Hi"; }
};
alert(obj.fruit);
alert(obj.id);
alert(obj.sayHello());