Angular 2：如何访问事件中的组件变量（范围问题）

Question

I have a click event on my component, that needs to access private variables from the component itself. However I seem to be running into a scoping issue: the keyword this no longer refers to the component's scope but rather the scope of the event. Help!

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

In the above example, this.arr is undefined because it does not belong to the event scope.

How do I get access to the component scope from here?

Answer 1

添加.bind(this)来解决this

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