31 lines
996 B
HTML
31 lines
996 B
HTML
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<!DOCTYPE html>
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<!--
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Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
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Click nbfs://nbhost/SystemFileSystem/Templates/ClientSide/html.html to edit this template
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-->
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<html>
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<head>
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<title>Blastoff</title>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<script>
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function sleep(ms) {
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return new Promise(resolve => setTimeout(resolve, ms));
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}
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async function countdown() {
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var countdownLength = 5;
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for (let i = countdownLength; i > 0; i--) {
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document.write("Countdown in " + i + "..." + "<br>");
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await sleep(1000);
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}
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document.write("BLASTOFF!");
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}
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</script>
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</head>
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</html>
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<body>
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<button id="countdown" onclick="countdown();">Start Countdown</button>
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</body>
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