Modifying Components from External JavaScript

You can modify component state outside an event handler and trigger re-rendering of the component. This is particularly useful if you use window.setTimeout() in your event handlers to execute some logic after a time delay.

1swfobject.registerObject("clippy.codeblock-0", "9");window.setTimeout(function () {
2    $A.run(function() {
3        cmp.set("v.visible", true);
4    });
5}, 5000);

This code sets the visible attribute on a component to true after a five-second delay. Use $A.run() to modify a component outside an event handler and trigger re-rendering of the component by the framework.