jQuery-based method for handling clicks declared with a data-attribute

click-handler.js

$(function() {
    'use strict';
    // generic click handler
    $(document).on('click', '[data-handler]', function(event) {
        var handler = this.getAttribute('data-handler');
        // honour default behaviour when using modifier keys when clicking
        // for example:
        // cmd + click / ctrl + click opens a link in a new tab
        // shift + click opens a link in a new window
        if (this.tagName === 'A' && (event.metaKey || event.ctrlKey || event.shiftKey)) {
            return;
        }
        if (handlers && typeof handlers[handler] === 'function') {
            handlers[handler].call(this, event);
        }
        else {
            if (window.console && typeof console.log === 'function') {
                console.log('Non-existing handler: "%s" on %o', handler, this);
            }
        }
    });
});