Accessing this from callback?

Question

typescript

c
class PopOverTemplate {

    elem: JQuery;

    private callback(el: JQuery) {
        console.log(this);
        this.elem = el;

    }

    constructor(path: string) {

        Utils.loadTemplate(path, this.callback);
    }
};

this returns window, since the callback itself in loadTemplate is called directly from under $.get(), in pure JS this is solved by a declaration like
var _this = this;
But in TS you cannot declare variables like this. How to solve the problem in the end?

Answer 1

Utils.loadTemplate(path, el => this.callback(el))