JSFiddle - React, Tailwind, and code Playground

HTML

<div class="div1">I am div 1</div>
<div class="div2">I am div 2</div>

JavaScript

var foo = {
    init: function() {

        var i = 0,
            keys = []
            self = this;

        for (var key in this) {
            keys.push(key);
        }

        for (i; i < keys.length; i++) {
            if (keys[i].match(/^on/i)) {
                var delegateFunc = keys[i].split(' | '),
                    event = delegateFunc[2],
                    selector = delegateFunc[1],
                    keyName = keys[i];

                console.log('###');
                console.log( 'selector: ' + selector );
                console.log( 'event: ' + event );
                console.log( 'function: ' + self[keyName] );
                
                $('body').on(event, selector, function(ev) {
                    self[keyName](ev, ev.target);
                });
            }
        }

    },

    'on | .div1 | click': function(ev, el) {
        alert('you clicked 1');
    },

    'on | .div2 | click': function(ev, el) {
        alert('you clicked 2');
    }
}

$(function() {
    foo.init();
});