# Yahoo! UI Library

### event 3.3.0

Yahoo! UI Library > event > event-ready.js (source view)
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    /*
     * DOM event listener abstraction layer
     * @module event
     * @submodule event-base
     */

    /**
     * The domready event fires at the moment the browser's DOM is
     * usable. In most cases, this is before images are fully
     * downloaded, allowing you to provide a more responsive user
     * interface.
     *
     * In YUI 3, domready subscribers will be notified immediately if
     * that moment has already passed when the subscription is created.
     *
     * One exception is if the yui.js file is dynamically injected into
     * the page.  If this is done, you must tell the YUI instance that
     * you did this in order for DOMReady (and window load events) to
     * fire normally.  That configuration option is 'injected' -- set
     * it to true if the yui.js script is not included inline.
     *
     * This method is part of the 'event-ready' module, which is a
     * submodule of 'event'.
     *
     * @event domready
     * @for YUI
     */
    Y.publish('domready', {
        fireOnce: true,
        async: true
    });

    if (GLOBAL_ENV.DOMReady) {
        Y.fire('domready');
    } else {
        Y.Do.before(function() { Y.fire('domready'); }, YUI.Env, '_ready');
    }

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