I have a basic select element with options that dropdown hooked up to a small set of data which is being filtered using the dropdown. Initially on page load the select element has a value of undefined (according to the console), however after selecting any option it takes on the value of that option.
How can I go back to undefined? Basically I want to be able to select an option in the list that will go back to displaying all of the data. Below is my app on JSBin: