{"id":1487,"date":"2023-04-28T09:33:59","date_gmt":"2023-04-28T08:33:59","guid":{"rendered":"https:\/\/www.6clickz.com\/?p=1487"},"modified":"2023-04-28T09:33:59","modified_gmt":"2023-04-28T08:33:59","slug":"google-tag-manager-tvorba-datalayer-promennych","status":"publish","type":"post","link":"https:\/\/www.6clickz.com\/cs\/google-tag-manager-tvorba-datalayer-promennych\/","title":{"rendered":"Google Tag Manager a tvorba dataLayer prom\u011bnn\u00fdch"},"content":{"rendered":"

Google tag manager je n\u00e1stroj, d\u00edky kter\u00e9mu m\u016f\u017eeme na n\u00e1\u0161 web vkl\u00e1dat r\u016fzn\u00e9 tagy (zna\u010dky) rychle a jednodu\u0161e bez nutnosti modifikace zdrojov\u00e9ho k\u00f3du. To znamen\u00e1, \u017ee k tomu nen\u00ed nutn\u00e1 pr\u00e1ce program\u00e1tor\u016f. Jednou z nejd\u016fle\u017eit\u011bj\u0161\u00edch \u010d\u00e1st\u00ed Google Tag Manageru je dataLayer.<\/p>\n

DataLayer (datov\u00e1 vrstva) je jedn\u00edm z kl\u00ed\u010dov\u00fdch pojm\u016f ve sv\u011bt\u011b Google Tag Manager (GTM). Je to javaskriptov\u00e1 prom\u011bnn\u00e1, a v analytice n\u00e1m slou\u017e\u00ed k p\u0159ed\u00e1v\u00e1n\u00ed dat z webu do GTM. Zjednodu\u0161en\u011b \u0159e\u010deno je to jak\u00e1si virtu\u00e1ln\u00ed vrstva webu, kter\u00e1 obsahuje r\u016fzn\u00e1 data a GTM si z dataLayeru na\u010d\u00edt\u00e1 hodnoty pot\u0159ebn\u00fdch prom\u011bnn\u00fdch. Tedy za p\u0159edpokladu, \u017ee se v n\u011bm nach\u00e1zej\u00ed. Data v dataLayery jsou generov\u00e1na jednotliv\u00fdmi u\u017eivateli, kte\u0159\u00ed s webem n\u011bjak\u00fdm zp\u016fsobem interaguj\u00ed. Nap\u0159\u00edklad kliknou na n\u00e1hled produktu, nebo si p\u0159idaj\u00ed produkt do ko\u0161\u00edku. V dataLayery jsou tedy ulo\u017eeny informace jako nap\u0159\u00edklad text kliknut\u00e9ho tla\u010d\u00edtka, cena produktu nebo hodnota objedn\u00e1vky.<\/p>\n

\"\"<\/p>\n

Na prvn\u00ed pohled se m\u016f\u017ee dataLayer zd\u00e1t komplikovan\u00fd. Z\u00e1klady, kter\u00e9 pot\u0159ebujeme v\u011bd\u011bt pro tvorbu prom\u011bnn\u00fdch, lze zcela jednodu\u0161e a rychle pochopit.<\/p>\n

Kde v GTM najdeme dataLayer?<\/h2>\n

V GTM klikn\u011bte na prav\u00e9 stran\u011b na tla\u010d\u00edtko “preview” – otev\u0159e se n\u00e1m nov\u00e9 okno – Google Tag Assistant. Vypln\u00edte url adresu webov\u00e9 str\u00e1nky a dostanete se do debug m\u00f3du na dan\u00e9 str\u00e1nce. N\u00e1sledn\u011b se vra\u0165te na str\u00e1nku Google Tag Assistant.<\/p>\n

\"\"<\/p>\n

Z\u00e1kladn\u00ed princip dataLayer<\/h2>\n

Ka\u017ed\u00fd objekt v dataLayery se skl\u00e1d\u00e1 z kl\u00ed\u010de a hodnoty. Kl\u00ed\u010d z\u016fst\u00e1v\u00e1 stejn\u00fd, m\u011bn\u00ed se n\u00e1m jen jeho hodnota. V na\u0161em p\u0159\u00edkladu to vypad\u00e1 n\u00e1sledovn\u011b:<\/span><\/p>\n

Kl\u00ed\u010d = <\/span>pageType<\/span><\/i>, hodnota = <\/span>productDetail<\/span><\/i><\/p>\n

DataLayer je tvo\u0159en v\u00edce vrstvami, ty jsou od sebe odd\u011bleny tabul\u00e1torem a {} z\u00e1vorkou. Jedn\u00e1 se o vno\u0159en\u00e9 datov\u00e9 vrstvy, kter\u00e9 jsou hierarchicky uspo\u0159\u00e1d\u00e1ny. Ka\u017ed\u00e1 vno\u0159en\u00e1 vrstva je posunuta doprava.<\/span><\/p>\n

\"\"<\/p>\n

Chcete-li pracovat s \u00fadaji z dataLayeru a pou\u017e\u00edvat je v tagech (zna\u010dk\u00e1ch), \u010di triggerech (spou\u0161t\u011b\u010d\u00edch) mus\u00edte si z nich vytvo\u0159it dataLayer variables (prom\u011bnn\u00e9). Prom\u011bnn\u00e9 tohoto typu (dataLayer variables) jsou asi nejpou\u017e\u00edvan\u011bj\u0161\u00ed typ prom\u011bnn\u00fdch a p\u0159i pr\u00e1ci v GTM se s nimi budete setk\u00e1vat \u010dasto.
\n<\/b><\/p>\n

Vytv\u00e1\u0159en\u00ed prom\u011bnn\u00fdch z dataLayeru<\/h2>\n

Poj\u010fme si vytvo\u0159it prom\u011bnnou, d\u00edky kter\u00e9 zjist\u00edme, o jak\u00fd typ str\u00e1nky se jedn\u00e1. V e-shopech se b\u011b\u017en\u011b nach\u00e1zej\u00ed produktov\u00e9 nebo kategorick\u00e9 str\u00e1nky \u010di str\u00e1nka ko\u0161\u00edku.
\n<\/span>1. V Google Tag Manager vyberte Prom\u011bnn\u00e9 > v sekci \u201cUser – Defined Variables\u201d New > Data Layer Variable
\n<\/span>2. Vlevo naho\u0159e vypln\u00edme n\u00e1zev prom\u011bnn\u00e9. U prom\u011bnn\u00fdch z datov\u00e9 vrstvy zvykneme pou\u017e\u00edvat ozna\u010den\u00ed DLV – \/n\u00e1zev kl\u00ed\u010de, kter\u00fd odpov\u00edd\u00e1 hodnot\u011b, kterou chceme vyt\u00e1hnout\/
\n<\/span>3. Vypln\u00edme Data Layer Variable Name. Jeliko\u017e v dataLayery m\u00e1m v\u00edce vno\u0159en\u00fdch vrstev, p\u0159i psan\u00ed dataLayer Variable Name budeme pou\u017e\u00edvat speci\u00e1ln\u00ed te\u010dkovou notaci. Jednotliv\u00e9 vrstvy od sebe odd\u011blujeme te\u010dkou a p\u00ed\u0161eme je od nejvy\u0161\u0161\u00ed po nejni\u017e\u0161\u00ed. Zjednodu\u0161en\u011b \u0159e\u010deno, shora dol\u016f a zprava doleva. N\u00e1zev na\u0161\u00ed prom\u011bnn\u00e9 bude vypadat takto:<\/span><\/p>\n

shoptet.pageType<\/b><\/p>\n

\"\"4.\u00a0Novou prom\u011bnnou ulo\u017e\u00edme<\/p>\n

Prom\u011bnnou pageType vyu\u017eijete nap\u0159\u00edklad v p\u0159\u00edpad\u011b, \u017ee chcete odp\u00e1lit ur\u010dit\u00fd tag pouze na str\u00e1nce produktu. D\u00edky n\u00ed vytvo\u0159\u00edte trigger, kter\u00fd se bude spou\u0161t\u011bt pouze na ur\u010dit\u00e9m typu str\u00e1nky.<\/p>\n

Poj\u010fme si zkontrolovat, zda prom\u011bnn\u00e1 funguje spr\u00e1vn\u011b. Op\u011bt p\u0159ejd\u011bte do preview modu. V Preview mode se na va\u0161\u00ed str\u00e1nce proklikn\u011bte nap\u0159\u00edklad na produkt. V Google Tag Assistant tentokr\u00e1t zvolte mo\u017enost Variables, na lev\u00e9 stran\u011b vyberte p\u0159\u00edslu\u0161nou ud\u00e1lost (v na\u0161em p\u0159\u00edpad\u011b se jedn\u00e1 o Window Loaded). Mezi prom\u011bnn\u00fdmi byste m\u011bli vid\u011bt pr\u00e1v\u011b vytvo\u0159enou prom\u011bnnou DVL – pageType i s p\u0159\u00edslu\u0161nou hodnotou.<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

Jak vyt\u00e1hnout \u00fadaje z pole prom\u011bnn\u00fdch?<\/h2>\n

P\u0159i pr\u00e1ci s dataLayerem se m\u016f\u017eete setkat tak\u00e9 s jin\u00fdm typem vno\u0159en\u00e9ho objektu, a t\u00edm je pole. Pole je v Javascriptu ohrani\u010deno hranat\u00fdmi z\u00e1vorkami a je tvo\u0159eno v\u00edce prvky. Zjednodu\u0161en\u011b m\u016f\u017eeme pole zapsat jako:<\/p>\n

[A, B, C]<\/p>\n

Pozice prvk\u016f pole jsou o\u010d\u00edslov\u00e1ny. \u010c\u00edslov\u00e1n\u00ed za\u010d\u00edn\u00e1 nulou. N\u00e1\u0161 p\u0159\u00edklad vypad\u00e1 takto.<\/p>\n

A = poloha 0 B = poloha 1 C = poloha 2<\/p>\n

S polem prom\u011bnn\u00fdch se setk\u00e1me nap\u0159\u00edklad v ko\u0161\u00edku nebo na d\u011bkovac\u00ed str\u00e1nce po odesl\u00e1n\u00ed objedn\u00e1vky. Je to jednodu\u0161e \u0159e\u010deno, pokud jeden objekt (\u0159\u00e1dek) dataLayeru obsahuje dal\u0161\u00ed objekty, kter\u00e9 maj\u00ed sv\u00e9 zvl\u00e1\u0161tn\u00ed hodnoty. Nap\u0159\u00edklad v\u00edce produkt\u016f v ko\u0161\u00edku nebo objedn\u00e1vce. Ka\u017ed\u00fd z t\u011bchto produkt\u016f m\u00e1 p\u0159itom sv\u016fj n\u00e1zev, id, cenu, kategorii, atp. Poj\u010fme si do ko\u0161\u00edku vlo\u017eit v\u00edce produkt\u016f a pod\u00edvejme se, jak vypad\u00e1 dataLayer na str\u00e1nce ko\u0161\u00edku.<\/p>\n

\"\"<\/p>\n

Pokud bychom cht\u011bli do prom\u011bnn\u00e9 datov\u00e9 vrstvy ulo\u017eit nap\u0159\u00edklad ID prvn\u00edho produktu, n\u00e1\u0161 kl\u00ed\u010d by byl v tomto p\u0159\u00edpad\u011b <\/span>ecommerce.checkout.product.0.id<\/b><\/p>\n

Pro cenu prvn\u00edho produktu by kl\u00ed\u010d vypadal n\u00e1sledovn\u011b <\/span>ecommerce.checkout.product.0.price<\/b><\/p>\n

V p\u0159\u00edpad\u011b, \u017ee chceme definovat prom\u011bnn\u00e9 druh\u00e9ho produktu 0 nahrad\u00edme 1<\/span><\/p>\n

Funk\u010dnost vytvo\u0159en\u00e9 prom\u011bnn\u00e9 si ov\u011b\u0159\u00edme stejn\u011b jako v prvn\u00edm p\u0159\u00edpad\u011b. P\u0159es Tag Assistant se dostaneme na str\u00e1nku ko\u0161\u00edku, v horn\u00ed li\u0161t\u011b zvol\u00edme mo\u017enost variables, najdeme nov\u011b vytvo\u0159enou prom\u011bnnou a zkontrolujeme, zda se jej\u00ed hodnota shoduje s realitou.<\/span><\/p>\n

Je\u0161t\u011b upozorn\u011bn\u00ed na z\u00e1v\u011br \u2013 p\u0159i vytv\u00e1\u0159en\u00ed prom\u011bnn\u00fdch z datov\u00e9 vrstvy rozli\u0161ujte velk\u00e1 a mal\u00e1 p\u00edsmena, proto\u017ee Javascript je tak jako v\u011bt\u0161ina programovac\u00edch jazyk\u016f case \u2013 sensitive. Proto <\/span>Product<\/b> a <\/span>product<\/b> nen\u00ed tot\u00e9\u017e.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Google tag manager je n\u00e1stroj, d\u00edky kter\u00e9mu m\u016f\u017eeme na n\u00e1\u0161 web vkl\u00e1dat r\u016fzn\u00e9 tagy (zna\u010dky) rychle a jednodu\u0161e bez nutnosti modifikace zdrojov\u00e9ho k\u00f3du. To znamen\u00e1, \u017ee k tomu nen\u00ed nutn\u00e1 pr\u00e1ce program\u00e1tor\u016f. Jednou z nejd\u016fle\u017eit\u011bj\u0161\u00edch \u010d\u00e1st\u00ed Google Tag Manageru je dataLayer. DataLayer (datov\u00e1 vrstva) je jedn\u00edm z kl\u00ed\u010dov\u00fdch pojm\u016f ve sv\u011bt\u011b Google Tag Manager (GTM). […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-1487","post","type-post","status-publish","format-standard","hentry","category-uncategorized-cs","blog_tags-tag-manager"],"yoast_head":"\nGoogle Tag Manager a tvorba dataLayer prom\u011bnn\u00fdch - 6clickz<\/title>\n<meta name=\"description\" content=\"Google tag manager je n\u00e1stroj, d\u00edky kter\u00e9mu m\u016f\u017eeme na n\u00e1\u0161 web vkl\u00e1dat r\u016fzn\u00e9 tagy (zna\u010dky) rychle a jednodu\u0161e bez nutnosti modifikace zdrojov\u00e9ho k\u00f3du. To znamen\u00e1, \u017ee k tomu nen\u00ed nutn\u00e1 pr\u00e1ce program\u00e1tor\u016f. Jednou z nejd\u016fle\u017eit\u011bj\u0161\u00edch \u010d\u00e1st\u00ed Google Tag Manageru je dataLayer.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.6clickz.com\/cs\/google-tag-manager-tvorba-datalayer-promennych\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Google Tag Manager a tvorba dataLayer prom\u011bnn\u00fdch - 6clickz\" \/>\n<meta property=\"og:description\" content=\"Google tag manager je n\u00e1stroj, d\u00edky kter\u00e9mu m\u016f\u017eeme na n\u00e1\u0161 web vkl\u00e1dat r\u016fzn\u00e9 tagy (zna\u010dky) rychle a jednodu\u0161e bez nutnosti modifikace zdrojov\u00e9ho k\u00f3du. To znamen\u00e1, \u017ee k tomu nen\u00ed nutn\u00e1 pr\u00e1ce program\u00e1tor\u016f. 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