beholdable

BEHOLD!

Beholdable.js

What?

 
const state = new Beholdable();
 
state.behold("loggedIn", function(val) {
    if (val) {
        alert("Hello!");
    } else {
        alert("Goodbye.");
    }
});
 
state.set("loggedIn", true); // triggers alert "Hello!"
state.set("loggedIn", false); // triggers alert "Goodbye."
 
// You can also get values from your Beholdable:
state.get("loggedIn"); // => false

That's it. Observable objects. When you change them, the callbacks are fired, but only if the new value is different than the old one.