fun-with-html-and-javascript/first(boot).html at master · sumanth1462/fun-with-html-and-javascript · GitHub

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<!doctype html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <!-- Bootstrap CSS -->
    <link href="bootstrap/bootstrap-5.0.0/css/bootstrap.min.css" rel="stylesheet" >

    <title>Cyclicity of a Number</title>
    <style>
      .custom{
        text-align: center;
        background: silver;
        margin: 3px;
        min-height: 300px;
      }
    </style>
  </head>
  <body>
  	<div class="container">
      <div class="row">
        <div class="col-xs-6">
          <div class="custom">
      <form onsubmit="return false;">
  		<label style="font-size: 30px;">Enter a Number</label><br/><br/>
  		<input type="text" id="numb" name="numb"><br/><br/>
      <button type="submit" onclick="cyclicity()" class="btn btn-primary">Submit</button>
    </form>
    <br/>
    <div id="result" style="font-size: 30px;"></div><br/>
    <button class="btn btn-secondary" onclick="expl()">Explanation</button><br/><br/>
    <div id="exp"></div>
    </div>
  </div>
</div>
  	</div>
  	<script type="text/javascript">
      var a1=[]
      function cyclicity(){
        var a=document.getElementById("numb").value;
        if(isNaN(a)||a==""){
          alert("enter a number");
        }
        else{
          var arr=[];

          var c=1;
          var count=1;
          while(c<=5){
            var b=Math.pow(a,c);
            a1.push(b);
            arr.push(b);
            c=c+1;
          }


          for(let i=1;i<arr.length;i++){
            let last=arr[i]%10;
            let l1=arr[0]%10;
            if(l1==last){
              break;
            }
            else{
              count++;
            }

          }
          document.getElementById("result").innerHTML="Cyclicity of "+a+" is: "+count;


        }
      }
      function expl(){
        if(a1.length==0){
          document.getElementById("exp").innerHTML="Submit a number to know the eplanation";
        }
        /*else if(a1.length>5){
          document.getElementById("exp").innerHTML="";
        for(let i=5;i<a1.length;i++){
          document.getElementById("exp").innerHTML+=a1[i]+"<br/>";
          }
        }*/
        else{
            document.getElementById("exp").innerHTML="";
        for(let i=0;i<a1.length;i++){
          document.getElementById("exp").innerHTML+=a1[i]+"<br/>";
        }
      }
      a1=[];
      }
  	</script>
  </body>
</html>