javascript - Angular 2: How do you access component variables within an event (scope issue) -

i have click event on component, needs access private variables component itself. seem running scoping issue: keyword this no longer refers component's scope rather scope of event. help!

onclick(event){   for(var = 0; < this.arr.length; i++) { ... } } 

in above example, this.arr undefined because not belong event scope.

how access component scope here?

add .bind(this) fix this

element.addeventlistener("click", this.onclick.bind(this), false);