@Muggy Ate
Is there a more efficient way to iterate through from track0 to trackn in a JSON object? Currently, I am using song["track" + n] but I'm looking for ways to optimize my iteration process and potentially improve performance by moving my functions into the song JSON object. Would this actually result in any performance gains?
There are various approaches to tackle this issue. Here's one suggestion:
You can consolidate your required functionality into a single function that operates within the necessary object context. By injecting the appropriate context, you can establish references to this function within other objects, like so:
function iterator (criteria) {
var obj = this,
prop;
for (prop in obj) {
//TODO: Implement actions for each iteration
if (obj[prop] == criteria) { return prop; }
}
}
//sample scenarios
var song1 = { "track0": "data0", "track1": "data1" },
song2 = { "track0": "data0", "track1": "data1" };
//loops through song1 object,
//in this instance, searching for the property with value "data0"
var something = iterator.call(song1, 'data0');
//something = "track0"
Additionally, you have the flexibility to create objects utilizing prototypal inheritance.
If expanding your objects involves incorporating methods, as demonstrated in the earlier example where we utilized this inside the iterator function, it enables us to work seamlessly across different objects.
//enriches obj with new methods
//and links method execution context
function addMethods(obj) {
obj.iterator = iterator.bind(obj);
}
addMethods(song1);
addMethods(song2);
//leveraging the extended "iterator" method within song2
something = song2.iterator('data1');
//something = "track1"