Sensor Starter For Flood D/W [1/3]

//This is just a undersigned html page for flood system (will do html page features in the future)
//This is for Deviance
//Twitter: @ItsWizardly | Instagram: @imWizardly | Discord: wizard#7815


<html>
<head>
  <title> Flood detection [need bolt] </title>
  <script type="text/javascript" src="/serveFile?filename=bolt.js"> setDebug(true); </script>
</head>

<body onload="init();" bgcolor="#FFFFFF">
  <button onclick="myLoop(1);">START SENSOR</button>
  <script>

    var avg_curr = 0; //avg of current minute
    var avg_prev=0;  //avg for previous minutes
    var ctr=0,ctr2=0;
    function myLoop (i) {

      setTimeout(function () {

      var input = new XMLHttpRequest();

      input.onreadystatechange = function() {

      if (input.readyState == 4 && input.status == 200) {
          //document.getElementById("output").innerHTML = input.responseText;   //for debuging

        var flag = typeof input.responseText != 'object' ? JSON.parse(input.responseText) : input.responseText;
        alert(flag.value);  //It will print the value of second field    //for debuging

        if(flag.value != "failed")
          {
          var piezo = parseInt(flag.value);
          if(ctr == 4){
            var check = avg_curr - avg_prev;
            var alarm = new XMLHttpRequest();
            if (check >=25){
              /*sets the Digital pin 0 HIGH*/
              alarm.open("GET", "/digitalWrite?pin=0&state=HIGH",true);

            }
            else{
              alarm.open("GET", "/digitalWrite?pin=0&state=LOW",true);
            }
            alarm.send();
            ctr2++;
            avg_prev = (avg_prev+avg_curr)/ctr2;
            ctr =0;
           }
          else {
            ctr++;
            avg_curr = (avg_curr+piezo)/ctr;
          }
          }
        }
      };
      input.open("GET", "/analogRead?pin=A3",true);
      input.send();

      //console.log(10);   //for debuging
      if (i) myLoop(i);    //  decrement i and call myLoop again if i > 0
      }, 1500)
    }

    /*initiator function to set the IF condition and THEN action for IFTTT */
    function init()
    {
      var ifttt =  new XMLHttpRequest();
      iftttt.open("POST","/iftttSettings",true );
      ifttt.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
      ifttt.send('key=https://maker.ifttt.com/trigger/attention_people/with/key/daqNS-hP1rjC9iYeUPVCx2&pin=0&state=HIGH&enable=1');
    }
</script>
</body>
</html>