How to Retrieve Event Handlers Bound to an HTML Element with jQuery?

Finding Event Handlers Bound to an HTML Element with jQuery

In the given scenario, where two event handlers (click and mouseover) are bound to the element with the ID "elm," jQuery provides a way to retrieve a list of these bound events.

Solution Using jQuery's $._data Method

Modern versions of jQuery offer an internal-use method called $._data that allows you to access data attached to an element by jQuery. For event handlers, this data includes the bound events.

// Bind event handlers to the element
$("#elm").click(_f);
$("#elm").mouseover(_m);

// Retrieve events using $._data
var events = $._data($("#elm")[0], "events");

The events object will contain keys for each event bound to the element. Each key corresponds to the event type, such as click or mouseover. The value associated with each key is an array of event handlers for that type.

Accessing Event Handler Definitions

In Chrome, you can gain even deeper insights by right-clicking a handler function and selecting "view function definition." This action will open the source code where the handler is defined, providing you with a clear understanding of its implementation.

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