AugularJS tutorial $watch $digest $apply

http://codedamn.com/videos/angular/1/

http://tutorials.jenkov.com/angularjs/watch-digest-apply.html

http://angular-tips.com/blog/2013/08/watch-how-the-apply-runs-a-digest/

http://angular-tips.com/blog/2013/08/watch-how-the-apply-runs-a-digest/

$watch - watch {{}} variable changes

$digest

inside JavaScript event handler it not doing the digest cycle, so you have to manually added