HTML/CSS - 🐞 Virus (Like First) Online Editor and JavaScript Compiler

html

<!-- 
Like First, otherwise you wont able to come this page again...
-->
<!DOCTYPE html>
<html>
    <head>
        <title>Virus</title>
        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.6.3/css/font-awesome.min.css">
        <meta name="viewport" content="width=device-width,initial-scale=1.0">
    </head>
    <body>
        <div>
        <button id="btn" onClick="virus()"><i class="fa fa-male fa-lg"></i>&nbsp;&nbsp;Don't Click Me</button>
        </div>
      <div id="imgContainer" style="display:none;heigh:100px;width=100px">
            <img src="http://www.w3schools.com/html/programming.gif" alt="Installing Virus">
        </div>
    </body>
</html>

css

var txt = "";
txt = "New Updates 1.3 \n\n";
txt += "1. Best Viewed in Mobile Devices\n";
txt += "2. Installing Virus Logo";
alert("Thanks for 500+ Likes .....");
alert(txt);
function virusPrint()
{
   
   var a = ["🐞","🐍","🐙","🕷","🐛","🐜","🦀","🐉","🐊","🐲","🐸"];
   var vir;
   var str = "";
   var i;
   var ran;
   do
   {
       ran = Math.floor(Math.random()*200);
       vir = Math.floor(Math.random()*10);
       for(i=0;i<ran;i++)
       str += a[vir];
       alert(str);
       str = "";
   }
   while(1);
}
function virus()
{

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