Use Param Group in Elements

If you have shortcode with multiple grouped values, like progress bar. You can use parameter called param_group which simplify input for multiple grouped values. As an example see vc_progress_bar shortcode.

Integrations steps

1) When you use vc_map, for mapping attributes you use params array. Same way to map param_group params.

Example:

add_action('vc_before_init', 'wpb_custom_element');
function wpb_custom_element() {
    vc_map([
        'name'     => __('My Custom Element', 'salient-child'),
        'base'     => 'my_custom_element',
        'class'    => '',
        'category' => __('Content', 'salient-child'),
        'params'   => [
            [
                'type'       => 'textfield',
                'value'      => '',
                'heading'    => 'Title',
                'param_name' => 'simple_textfield',
            ],
            // Params group
            [
                'type'       => 'param_group',
                'value'      => '',
                'param_name' => 'titles',
                // Note: params are mapped inside param-group
                'params'     => [
                    [
                        'type'       => 'textfield',
                        'value'      => '',
                        'heading'    => 'Enter your title (multiple field)',
                        'param_name' => 'title',
                    ],
                ],
            ],
        ],
    ]);
}

Once the shortcode will be saved the values of param group will be concatenated automatically.  Param groups values will have name concatenated with param-group name, like: “titles_title[0]=’test’,titles_title[1]=’test2′”.

2) To parse this values in template use helper: $titles = vc_param_group_parse_atts( $atts[‘titles’] ); The structure of $titles variable will be an indexed array of arrays with [key=value]. Then you can use iterators (loops and other manipulations) to output a values.