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Customizing Event
RESETRUNFULL
<!DOCTYPE html><html><head></head><body>
<script>
document.addEventListener("timeout",()=>{
alert(`Time's Up: started at
${new Date(event.detail.startTS)}`);
})
setTimeout(()=>{
var ev = new CustomEvent("timeout",
{detail:{startTS:Date.now()}});
document.dispatchEvent(ev);
},3000);
</script></body></html>