Example of object and function based variable scope.

gistfile1.txt

/** Example of Object based scope **/

ExampleObject = {
	setVariable: function () {
		this.value = 'foo';
	},
	getVariable: function () {
		// this.value is accessible from here because it was declared as a property of "this"
		return this.value;
	}
}

ExampleObject.setVariable();
ExampleObject.getVariable(); // => 'foo'
ExampleObject.value // => 'foo' - can also be accessed as a property of ExampleObject



/** Example of function based scope **/

function () {
	var aVariable;
	function set () {
		aVariable = 'bar';
	}
	function get () {
		return aVariable;
	}
	set();
	get(); // => 'bar' - aVariable can be accessed from both functions because it was declared in a shared parent scope
	aVariable; // => 'bar'
}
set(); // => Error - set is undefined or not a function - set does not exist here, because it was not declared in the current scope or a parent scope.
aVariable; // => undefined