eChangeEvent.html">readyStateChangeEvent</a></span>
                =
                <span class="constant-value">const <a href="polymer_app_layout/EventStreamProvider-class.html">EventStreamProvider</a>&lt;<a href="dart-html/ProgressEvent-class.html">ProgressEvent</a>&gt;<ProgressEvent>('readystatechange')</span>
            </dt>
            <dd>
                <div class="is-const">
                    const
                </div>
                Static factory designed to expose <code class="prettypri