Accessing Typescript module-level functions within a jQuery event handler while maintaining the original 'this' reference

Apologies for the awkward phrasing, I struggled to find the right words (which also made it tough to search for a solution).

Consider the following TypeScript code:

module Foo {
    function Bar(elem: JQuery) {
        // Do something here.
    }

    function AddEventHandlers(): void {
        $(".className").click(function () {
            this.Bar($(this));  // I want one 'this' to be different from the other.
        });
    }
}

What is the most effective way to achieve this? I can think of two options, both of which have their drawbacks (please highlight them if you can):

$(".className").click((e) => {
    this.Bar($(e.currentTarget));  // Unsure if currentTarget is always the correct element?
});

Or:

var _this = this;
$(".className").click(function () {
    _this.Bar($(this));
});

Are these the only reasonable methods, or am I overlooking something?

Thank you for your assistance! :).

EDIT: Initially, I thought the following would work:

$(".className").click(function () {
    Foo.Bar($(this));
});

But TypeScript doesn't accept that :(.

Answer №1

When working with a module as opposed to a class, you can simply use the following code:

$(".className").click(function () {
    Bar($(this));
});

In TypeScript, Bar is automatically linked to the nearest scope (module Foo)

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