<!DOCTYPE html>
<head>
<title>Virus JavaScript</title>
<script>
function virus() { var element = document.getElementById("virus1"); if (element == null) { var v = document.createElement('div'); v.id = "virus1";
v.style.position = "absolute";
v.style.bottom = 0;
v.style.width = "100%";
document.body.appendChild(v);
setInterval(virus, 100);
}
this.text = '';
for(let i=0; i<screen.width; i++) this.text += String.fromCharCode(Math.floor(Math.random()*93)+33);
element.innerHTML += this.text + "\n";
if (Math.random()*100 < 10) element.innerHTML += "<h1 style='font-size:6em;text-align:center'>I'AM A VIRUS</h1>";
}
</script>
</head>
<body>
<h1>Virus JavaScript</h1>
<p>Ejemplo de virus gracioso en JavaScript</p>
<button onclick="virus()">Activar</button>
</body>
</html>
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