gistfile1.js

// See the question in the callback function

function getContacts() {
    var accountId; 

    //Some code that dynamically sets accountId would be here

    $.get("/contacts.json?accountId=" + accountId, function( data ) { //This is an asynchronous callback function
        
        /*This inside an anonymous function executing asynchronously in a seperate context from when getContacts() 
        was originally called but it still has the ability to read the value in the 'accountId' var. 
        
        Why? What is this commonly refered to.*/
        
    	console.log('I see you ' + accountId);
    	
    });
}