我知道你已经要求用js给出答案，但我无法对你是否接受用PHP编写的解决方案发表评论。

如果您喜欢使用PHP，可以创建一个接受每个短代码作为参数的短代码。您甚至可以使用他们的快捷码映射工具将其映射到visual composer中。

示例短代码如下所示：

[change_shortcode_each_day mon="short_one" tue="short_two" wed="short_three" thu="short_four" fri="short_five" sat="short_six" sun="short_seven" default="default_short"]

add_shortcode(\'change_shortcode_each_day\', \'wpse_273181_change_shortcode_each_day\');

function wpse_273181_change_shortcode_each_day($atts) {

    /**
     * You can set defaults here so you don\'t have to right the
     * args in the shortcode itself.
     * 
     * You cannot technically use a shortcode in a shortcode
     * so you need to type the shortcodes without the brackets
     */
    $unprepared_shortcodes = shortcode_atts(
        array(
            \'mon\'     => \'\',
            \'tue\'     => \'\',
            \'wed\'     => \'\',
            \'thu\'     => \'\',
            \'fri\'     => \'\',
            \'sat\'     => \'\',
            \'sun\'     => \'\',
            \'default\' => \'\',
        ),
        $atts
    );

    //make each shortcode \'complete\' e.g [short_one]
    foreach ($unprepared_shortcodes as $key => $value) {
        $prepared_shortcodes[$key] = \'[\' . $value . \']\';
    }

    extract($prepared_shortcodes);

    $current_day = date(\'N\');

    switch ($current_day) {
        case \'1\' :
            $short_to_use = $mon;
            break;
        case \'2\' :
            $short_to_use = $tue;
            break;
        case \'3\' :
            $short_to_use = $wed;
            break;
        case \'4\' :
            $short_to_use = $thu;
            break;
        case \'5\' :
            $short_to_use = $fri;
            break;
        case \'6\' :
            $short_to_use = $sat;
            break;
        case \'7\' :
            $short_to_use = $sun;
            break;
    }

    /**
     * check to make sure the we have a shortcode for the day
     * if we don\'t use the default.
     * 
     * return false if both short_to_use and default are \'blank\'
     */

    if($short_to_use == \'[]\' && $default != \'[]\') {
        $short_to_use = $default;
    } else if ($short_to_use == \'[]\' && $default == \'[]\') {
        return false;
    }

    //if we\'re still here do the shortcode
    return do_shortcode($short_to_use);
}