es2k15_this.md

ES2K15 this

const benda = {
    a: function() {
        this.v_a = 1;

        let x = {
            count_va: () =>{ // notice here, we're using () => {...}
                return this.v_a;
            }
        }

	return x.count_va();
    }
}
benda.a() // 1.

const benda = {
    a: function() {
        this.v_a = 1;

        let x = {
            count_va: function() { // notice here, we're using function() {...}
                return this.v_a;
            }
        }

	return x.count_va();
    }
}
benda.a() // undefined.