I'm having some problems using `this` in VUE single file components (or any component for that matter).

*This is probably not VUE specific issue (more javascript), but I've ran into it, while creating a VUE application.*

In VUEJS `this` keyword is used inside single vue component to refer to the component itself. But if scope is changed (e.g. forEach loop), `this` no longer refers to the component but (as in example), `this` refers to the array being iterated.

One solution to this is to save `this` value first (e.g. `var self = this;`).

Example (not working):

```
<script>
  export default {
    data() {
      return {
        someProp: "stringValue",
        myArray: [
          { "key": "key1", "selected": true },
          { "key": "key2", "selected": true },
          { "key": "key3", "selected": true }
        ]
      }
    },
    methods: {
      method1: function() {
        var selectedKey = "";
        this.myArray.forEach(function(item) {
          // Obviously, accessing "this.someProp" here will not work
        });
      }
    }
  }
</script>

```

Example (working):

```
<script>
  export default {
    data() {
      return {
        myArray: [
          { "key": "key1", "selected": true },
          { "key": "key2", "selected": true },
          { "key": "key3", "selected": true }
        ]
      }
    },
    methods: {
      method1: function() {
        var self = this; // Save "this" reference
        var selectedKey = "";
        self.myArray.forEach(function(item) {
          // Here, accessing "self.someProp" will work since "this" was saved first.
        });
      }
    }
  }
</script>

```

My question is, is it possible to somehow specify "var self = this;" for all methods used in a component, without specifying it in each and every method? Somewhere on the start maybe? Probably cannot do it inside `data` function since it requires `this` modifier to be accessed.

Of course this is just a simple example, it could get more complex if, for example, calling some 3rd party libraries and providing them some callback functions where scope would be changed also.