Highlight low-engagement rows
Highlights GA4 report rows in red where a percentage metric such as engagement rate drops below 70%.
Code to copy
(function () {
var LIMIT = 70; // engagement rate below this = flag
function scan() {
document.querySelectorAll('[role="row"], tbody tr').forEach(function (row) {
var cells = row.querySelectorAll('[role="cell"], [role="gridcell"], td');
cells.forEach(function (c) {
var m = (c.textContent || '').match(/(\d+(?:[.,]\d+)?)\s*%/);
if (!m) return;
var v = parseFloat(m[1].replace(',', '.'));
if (v < LIMIT) {
row.style.setProperty('background', 'rgba(234,67,53,0.12)', 'important');
}
});
});
}
scan();
setTimeout(scan, 2500);
})();How to use this example
- Copy the code with the button above.
- Install JustZix (2 minutes) and open the extension on the target page.
- Add a new rule matching that page.
- Paste the code into the rule's JavaScript panel and save — it runs on every page visit.
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