{"id":8807,"date":"2026-08-05T14:00:46","date_gmt":"2026-08-05T12:00:46","guid":{"rendered":"https:\/\/www.lukaswojcik.com\/blog\/?page_id=8807"},"modified":"2026-08-05T15:36:58","modified_gmt":"2026-08-05T13:36:58","slug":"ga4-ecommerce-item-array-validator","status":"publish","type":"page","link":"https:\/\/www.lukaswojcik.com\/blog\/en\/toolbox\/ga4-ecommerce-item-array-validator\/","title":{"rendered":"GA4 E-Commerce Item Array Validator"},"content":{"rendered":"<div class=\"gtm-analyser-container\" style=\"background: var(--bg-panel, #1e1e24); padding: 25px; border-radius: 8px; border: 1px solid var(--border, #2a2a35);\">\n<p style=\"color: var(--text-secondary); margin-bottom: 20px;\">\n        Validate GA4 <code>items<\/code> array JSON payloads against Google Analytics e-commerce specification rules.\n    <\/p>\n<div style=\"margin-bottom: 15px;\">\n        <label style=\"color: var(--text-primary); font-weight: bold; display: block; margin-bottom: 6px;\">GA4 Items JSON Array:<\/label><br \/>\n        <textarea id=\"ga4-item-input\" style=\"width: 100%; height: 160px; padding: 12px; background: var(--bg-body, #101416); border: 1px solid var(--border); color: var(--text-primary); border-radius: 6px; font-family: monospace; resize: vertical;\">[<br \/>\n  {<br \/>\n    &#8220;item_id&#8221;: &#8220;SKU_12345&#8221;,<br \/>\n    &#8220;item_name&#8221;: &#8220;UniFi U7 Pro Access Point&#8221;,<br \/>\n    &#8220;price&#8221;: 189.00,<br \/>\n    &#8220;quantity&#8221;: 2,<br \/>\n    &#8220;item_category&#8221;: &#8220;Networking&#8221;<br \/>\n  }<br \/>\n]<\/textarea>\n    <\/div>\n<p>    <button id=\"validate-items-btn\" class=\"button\" style=\"background: var(--accent, #2ba6df); color: #0b1114; border: none; padding: 12px 24px; border-radius: 6px; font-weight: 700; cursor: pointer; margin-bottom: 20px;\">Validate Items Array<\/button><\/p>\n<div id=\"ga4-items-results\"><\/div>\n<\/div>\n<p><script>\ndocument.getElementById(\"validate-items-btn\").addEventListener(\"click\", () => {\n    const input = document.getElementById(\"ga4-item-input\").value.trim();\n    const results = document.getElementById(\"ga4-items-results\");<\/p>\n<p>    try {\n        const items = JSON.parse(input);\n        if (!Array.isArray(items)) {\n            results.innerHTML = \"<\/p>\n<p style='color:#ff6b6b;'>Error: Input must be a valid JSON array starting with [ and ending with ].<\/p>\n<p>\";\n            return;\n        }<\/p>\n<p>        let totalValue = 0;\n        let totalQty = 0;\n        const warnings = [];\n        const validItems = [];<\/p>\n<p>        items.forEach((item, index) => {\n            const row = index + 1;\n            const id = item.item_id || \"\";\n            const name = item.item_name || \"\";\n            const price = parseFloat(item.price) || 0;\n            const qty = parseInt(item.quantity, 10) || 1;<\/p>\n<p>            if (id === \"\" && name === \"\") {\n                warnings.push(\"Item #\" + row + \": Missing both item_id and item_name (at least one is required).\");\n            }\n            if (typeof item.price === \"undefined\") {\n                warnings.push(\"Item #\" + row + \": Missing price parameter.\");\n            }\n            if (typeof item.quantity === \"undefined\") {\n                warnings.push(\"Item #\" + row + \": Missing quantity parameter (defaults to 1 in GA4).\");\n            }<\/p>\n<p>            totalValue += price * qty;\n            totalQty += qty;\n            validItems.push(item);\n        });<\/p>\n<p>        const badge = warnings.length === 0 \n            ? \"<span style='background:#1a4731; color:#51cf66; padding:4px 8px; border-radius:4px; font-weight:bold;'>PASSED<\/span>\" \n            : \"<span style='background:#471a1a; color:#ff6b6b; padding:4px 8px; border-radius:4px; font-weight:bold;'>WARNINGS FOUND<\/span>\";<\/p>\n<p>        const warnHtml = warnings.length > 0 \n            ? \"<\/p>\n<div style='background:#471a1a; color:#ff6b6b; padding:12px; border-radius:6px; margin-top:15px;'>\" + warnings.join(\"<br \/>\") + \"<\/div>\n<p>\" \n            : \"\";<\/p>\n<p>        results.innerHTML = [\n            \"<\/p>\n<div style='background:var(--bg-body); padding:15px; border-radius:6px; border:1px solid var(--border);'>\",\n            \"  <\/p>\n<div style='display:flex; justify-content:space-between; align-items:center; margin-bottom:10px;'>\",\n            \"    <strong style='color:var(--text-primary);'>Validation Status<\/strong>\",\n            \"    \" + badge,\n            \"  <\/div>\n<p>\",\n            \"  <\/p>\n<div style='color:var(--text-secondary); font-size:0.9rem;'>\",\n            \"    Total Array Items: <strong style='color:var(--text-primary);'>\" + items.length + \"<\/strong> | \",\n            \"    Total Quantity: <strong style='color:var(--text-primary);'>\" + totalQty + \"<\/strong> | \",\n            \"    Calculated Total Value: <strong style='color:#51cf66;'>\" + totalValue.toFixed(2) + \"<\/strong>\",\n            \"  <\/div>\n<p>\",\n            \"<\/p><\/div>\n<p>\",\n            warnHtml\n        ].join(\"\");<\/p>\n<p>    } catch (e) {\n        results.innerHTML = \"<\/p>\n<p style='color:#ff6b6b;'>JSON Syntax Error: Ensure valid quotes and structure.<\/p>\n<p>\";\n    }\n});\ndocument.getElementById(\"validate-items-btn\").click();\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Validate GA4 e-commerce item arrays against specification rules and inspect calculated monetary totals.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":38,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-tool-base.php","meta":{"footnotes":""},"class_list":["post-8807","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is 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