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defuse-the-bom.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Defuse the BOM</title>
</head>
<body>
<h2 id="message">This BOM will self destruct in <span id="timer">5</span> seconds...</h2>
<button id="defuser">Defuse the BOM</button>
<script>
(function () {
"use strict";
var detonationTimer = 5;
// TODO: This function needs to be called once every second
function updateTimer() {
if (detonationTimer == 0) {
alert('EXTERMINATE!');
document.body.innerHTML = '';
} else if (detonationTimer > 0) {
document.getElementById('timer').innerHTML = detonationTimer;
}
detonationTimer--;
}
var timer = setInterval(updateTimer, 1000);
// TODO: When this function runs, it needs to
// cancel the interval/timeout for updateTimer()
function defuseTheBOM() {
clearInterval(timer)
alert('BOM DEFUSED!!');
}
// Don't modify anything below this line!
//
// This causes the defuseTheBOM() function to be called
// when the "defuser" button is clicked.
// We will learn about events in the DOM lessons
var defuser = document.getElementById('defuser');
defuser.addEventListener('click', defuseTheBOM);
})();
</script>
</body>
</html>