eBay: confirm before placing a bid
Shows a confirmation prompt when you click a bid button to protect against an accidental bid.
Code to copy
// Ask for confirmation before placing or reviewing a bid
function guardBidButton() {
document.querySelectorAll('a[href*="/bid/"], button[id*="bidBtn"], a#bidBtn_btn')
.forEach(function (btn) {
if (btn.getAttribute('data-jz-guard')) { return; }
btn.setAttribute('data-jz-guard', '1');
btn.addEventListener('click', function (e) {
if (!window.confirm('Place this bid on eBay?')) {
e.preventDefault();
e.stopPropagation();
}
}, true);
});
}
guardBidButton();
const obs = new MutationObserver(guardBidButton);
obs.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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