Tagify: Format for server side comma separated / on form changes event / jQuery example

tagify.js

jQuery(document).ready(function ($) {
  $input = $('#my-form')
    .tagify()
    .on('change', function (e, tagData) {
      if (tagData === undefined) {
        return;
      }
      // string [{"value":"test"}', '{"value":"test2"}] to JSON Object
      var tags = JSON.parse(tagData);
      // Converts into a simple array ["test", "test2"], then convert to string "test,test2"
      var tags_parsed = tags.map(item => item.value).toString();
      
      // Then you can do some ajax post and send the tags_parsed to the server side.
    });
});