Page.Meta = class {
    /**
     * Read meta data from page.
     */
    static read() {
        this.table = '';
        this.key = '';
        this.homepage = 0;
        this.session_id = '';
        this.version = '';
        this.api_version = '';
        this.page_id = '';
        this.platform = '';
        this.error_return_code = '';
        this.page_name = '';

        $('body > meta').each(function () {
            let $meta = $(this);
            if (!$meta.hasAttr('name')) {
                return;
            }
            Page.Meta[$meta.attr('name')] = $meta.attr('content');
            $meta.remove();
        });

        this.page_names = this.page_name.split(',');
    }
};