给你两个选择：
1.使用事件系统
1.编写一个插件

使用事件系统

通过事件系统而不是通过data存储函数来实现这一点：
1.为您自己的自定义事件附加处理程序
1.使用一个传统的函数，这样jQuery就可以在调用它时将this设置为元素
1.接受两个参数：事件和要传递的额外值
1.通过trigger“调用”回调
示例如下：

// Notice we're using a traditional function, not an arrow function
$(".myclass").on("callback-event", function (event, value) {
    // In the function, `this` refers to the DOM element the event
    // was triggered on. (Note it's not a jQuery wrapper.)
    console.log(
        `Callback called on node with id: ${this.id} with value ${value}`
    );
});

const elements = $(".myclass");
const node = $(elements[Math.floor(Math.random() * elements.length)]);

// Calling the callback
node.trigger("callback-event", 123);

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这也为您提供了将多个“回调”（也就是说，事件处理程序）附加到事件的选项。

编写插件

你可以写一个插件来把你自己的函数附加到jQuery对象上，这个函数不仅存在于特定的jQuery对象上，而且你可以让它像它一样工作。

// Basic plugin template with your function in it
(($) => {
    // This needs to be a traditional function, not an arrow function,
    // so `this` can be set by how it's called
    $.fn.callback = function(value) {
        // Here, `this` is the jQuery object which may have multiple
        // elements (or none) in it
        // You can filter out elements that don't have your class
        // on them if you like; otherwise, just remove the `filter`
        // call here and use `this.each(...)`.
        this.filter(".myclass").each((_, element) => {
            // Here, `element` is a DOM element
            console.log(
                `Callback called on node with id: ${element.id} with value ${value}`
            );
        });
        return this;
    };
})(jQuery);

const elements = $(".myclass");
const node = $(elements[Math.floor(Math.random() * elements.length)]);

// Calling the callback
node.callback(123);

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="one" class="myclass">one</div>
<div id="two" class="myclass">two</div>
<div id="three" class="myclass">three</div>

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