JSFiddle - React, Tailwind, and code Playground

HTML

<button id="my_button_id">
Click Me 
</button>

JavaScript

//Clousure 
(function($) {
	//Document.ready
	$(function(){
    //I think you want this ?
  	let myparam = { onclick: function() { alert("second"); } };
    $('#my_button_id').on('click', function(){ alert('first'); myparam.onclick() }); 
    //Another way.
    function doAlert (messages) {
    	alert(messages);
    }
    //Params Object
    let my_params = {
    	onclick_first : function () { return doAlert('first') },
      onclick_second : function () { return doAlert('second') }
    }
    //Event Click
    $('#my_button_id').on('click',function(){
    	//First Alert
    	my_params.onclick_first();
      //Second Alert
      my_params.onclick_second();
    });
  });
})(jQuery);