tor, which will be passed to <code>querySelector</code>.</td></tr><tr><td>context</td><td>Element|String</td><td>no</td><td>A DOM element within which to query. Can also be a selector
        string in which case the first matching element will be used
        as context. If missing (or no element matches selector), falls
        back to <code>document</code>.</td></tr></tbody></table><p class="vjs-only"><em id="$Footer">Defined in <a href="https://github.com/videojs/video.js/blob/master/src/js/component.js