Highlight low-ROAS rows
Tints rows red where ROAS drops below a threshold so you quickly catch unprofitable campaigns and ad sets.
Code to copy
(function () {
var MIN_ROAS = 2; // flag rows below this ROAS
function scan() {
try {
var cells = document.querySelectorAll('[role="gridcell"],[role="cell"]');
cells.forEach(function (c) {
var lbl = (c.getAttribute('aria-label') || '');
if (!/roas|return on ad spend/i.test(lbl)) return;
var m = (c.textContent || '').match(/([\d.,]+)/);
if (!m) return;
var n = parseFloat(m[1].replace(/,/g, ''));
var row = c.closest('[role="row"]');
if (!row || isNaN(n)) return;
row.style.background = n < MIN_ROAS ? 'rgba(211,47,47,0.12)' : '';
});
} catch (e) {}
}
scan();
setInterval(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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