JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

JavaScript

(function( $ ){
  $.fn.tooltip = function( options ) {  
    var settings = {
      'location'         : 'top',
      'background-color' : 'blue'
    };
    $.extend( settings, options || {} );
    return this.each(function() {
        alert(settings.location);
    });
  };
})( jQuery );

$(document).ready(function(){
    $("div").tooltip(); 
    $("div").tooltip({'location':'bla'}); 
    $("div").tooltip(); 
});