Дима Долготер

$('.product-tab-gallery').each(function() {

  var items = [];
  var $gallery = $(this);
  // Get links
  $gallery.find('a.imageitem').each(function() {
    items.push($(this).attr('href'));
  });

  var uniqueItems = [];

  // Remove duplicates
  $.each(items, function(i, el) {
    if($.inArray(el, uniqueItems) === -1) {
      uniqueItems.push(el);
    }
  });

  items = [];

  // Put in Magnific format
  $.each(uniqueItems, function(i, el) {
    items.push({
      src: el,
      type: 'image'
    });
  });

  // Assign an index to each link so the clicked one is shown first
  $gallery.find('a.imageitem').each(function() {
    var $a = $(this);
    $.each(items, function(i, el) {
      if (el.src == $a.attr('href')) {
        $a.data('index', i);
        return;
      }
    });
  });

  $gallery.on('click', 'a.imageitem', function(e) {
    e.preventDefault();
    var $a = $(this);
    $.magnificPopup.open({
      type: 'image',
      items: items,
      gallery: {
        enabled: true
      }
    });

    $.magnificPopup.instance.goTo($a.data('index'));

  });

});

const arr = [
        {id:"1", text:"купить1", status: false },
        {id:"2", text:"купить2", status: false },
        {id:"3", text:"купить3", status: false },
        {id:"4", text:"купить4", status: false },
    ];
    arr.forEach(item => {
        if (item['id'] == "4") {
            item['text'] = 'Заменен текст'
        }
    })