Javascript 'colon' for labeling anonymous functions?

Question

What does this code refer too?

queryString: function() {  //some code  } 

I tested it in the WebConsole (Firefox) but it wouldn't execute, so I'm thinking that it isn't equivalent to function queryString() {}.

So what is it exactly?

Answer 1

You are missing some code there, but I assume its part of an object declaration like this:

var obj = {   queryString: function() {     //some code   } }; obj.queryString(); 

It assigns a function as a property of an object literal. It would be equivalent to this:

var obj = {}; obj.queryString = function() { ... }; obj.queryString(); 

In general, the object literal syntax looks like this:

{ key: value, otherKey: otherValue }; 

So the reason this didn't work in the console is that it was not enclosed in {} characters, denoting an object literal. And this syntax is valid ONLY in an object literal.