'this' points to Window rather than custom element when called through setTimeOut()

[aravind901]

After calling a function through setTimeOut inside a Polymer element, 'this' no longer points to the custom element but to the window. Demo below.

http://jsbin.com/hehafo/2/edit?html,console,output

[pvmart]

use

setTimeout(this.delayed.bind(this),100);

or

this.async(this.delayed,100);

instead

[ghost]

Third method:

setTimeout(function() {
    this.delayed();
}.bind(this), 100);

[ebidel]

Yep, this is what async() is for. If you want to use setTimeout, you'll need to bind this. Just scoping ftw!