此GA电子商务跟踪代码是否有效？

Question

我不太了解GA电子商务跟踪代码，但需要工作。我从其他方式采取了跟随GA电子商务跟踪代码，我的问题是我不确定这个代码是否有效，我想要一些专业人员帮我检查一下，并给我一些建议。代码可能有点长，谢谢你的善意。

ga('create', 'UA-XXXXX-Y');
ga('require', 'ec');
ga('set', 'currencyCode', 'USD'); // Set tracker currency to Euros.

ga('ec:addImpression', {            // Provide product details in an 
impressionFieldObject.
'id': 'P12345',                   // Product ID (string).
'name': 'android Warhol T-Shirt', // Product name (string).
'category': 'Apparel/T-Shirts',   // Product category (string).
'brand': 'Google',                // Product brand (string).
'variant': 'Black',               // Product variant (string).
'list': 'Search Results',         // Product list (string).
'position': 1,                    // Product position (number).
'dimension1': 'Member'            // Custom dimension (string).
});

ga('ec:addProduct', {
'id': 'P12345',
'name': 'Android Warhol T-Shirt',
'category': 'Apparel',
'brand': 'Google',
'variant': 'black',
'price': '21.89',
'quantity': 1
});

ga('ec:setAction', 'purchase', {
id: 'T12345',
affiliation: 'Google Store - Online',
revenue: '28.03',
tax: '2.14',
shipping: '4.00',
coupon: 'SUMMER2013'
});

ga('ec:addPromo', {               // Promo details provided in a 
promoFieldObject.
'id': 'PROMO_1234',             // Promotion ID. Required (string).
'name': 'Summer Sale',          // Promotion name (string).
'creative': 'summer_banner2',   // Creative (string).
'position': 'banner_slot1'      // Position  (string).
});

function onProductClick() {
ga('ec:addProduct', {
'id': 'P12345',
'name': 'Android Warhol T-Shirt',
'category': 'Apparel',
'brand': 'Google',
'variant': 'black',
'position': 1
});

// Send the promo_click action with an event.
ga('ec:setAction', 'promo_click');
ga('send', 'event', 'Internal Promotions', 'click', 'Summer Sale');
ga('send', 'pageview');