Function triggerEvent

js/impress.js:1273–1277

( el, eventName, detail )

        // `triggerEvent` builds a custom DOM event with given `eventName` and `detail` data
        // and triggers it on element given as `el`.
        var triggerEvent = function( el, eventName, detail ) {
            var event = document.createEvent( "CustomEvent" );
            event.initCustomEvent( eventName, true, true, detail );
            el.dispatchEvent( event );
        };

        var lib = {
            $: $,