Disney+: reveal data-testid attributes
Developer aid: outlines every element with a data-testid attribute and shows its value in a tooltip.
Code to copy
// Developer aid: outline every element that carries a data-testid and log it
function annotateTestIds() {
document.querySelectorAll('[data-testid]').forEach(function (el) {
if (el.dataset.jzAnnotated) { return; }
el.dataset.jzAnnotated = '1';
el.style.outline = '1px dashed rgba(0,200,255,0.6)';
el.title = 'data-testid="' + el.getAttribute('data-testid') + '"';
});
}
annotateTestIds();
var devObs = new MutationObserver(annotateTestIds);
devObs.observe(document.documentElement, { childList: true, subtree: true });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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