cipher/index.html at main · acem702/cipher · GitHub

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<!DOCTYPE html>
<html>
<head>
<title></title>

<style type="text/css">
* {
 box-sizing:border-box;

}
.otp {
  display:flex;
  align-items: center;
  justify-content: space-evenly;
  margin: 100px auto 10px;
  max-width:360px;
}
.otp .otpBox {
  display:inline-block;
  width: calc(100% / 5);
  margin: 8px;
  height:60px;
  padding: 8px;
  border-radius:6px;
  border:6px solid #ddd;
  outline:none;
  font-size: 25px;
  font-weight:bold;
  text-align:center;
  text-transform: uppercase;
}


</style>
</head>
<body>

   <div class="otp" >
      <input class="otpBox" id="box1"  minlength="t"    />

       <input class="otpBox"  id="box2"  />
        <input class="otpBox"  id="box3"   />
         <input class="otpBox"  id="box4"   />
          <input class="otpBox"  id="box5"    />
   </div>

   <button>Show</button>
<!---
   <script src="otp.js"> -->
   </script>

   <script>

       var otps = document.querySelectorAll(".otpBox")

   for(const inputs of otps) {

      inputs.addEventListener("input", input)
      inputs.addEventListener("paste" , paste)
   }
   document.addEventListener("keyup", deleteOtp)

   function deleteOtp(e) {
     var keypress = e.keyCode;
     const  keys = [8, /* Add more keycodes here */]
     if( keys.includes( keypress ) ) {
       var target = e.target,
           prev = target.previousElementSibling;
       if( target.value == "" ) {
         prev.value = ""
         prev.focus()
       }else {
         target.focus()
       }
     }
   }


   function paste(e) {

     var  otp = e.clipboardData.getData("text/plain").trim()

     if(otp.length == otps.length) {
       for( var i in otp ) {
         otps[i].value = otp[i]
       }
     }
      e.preventDefault()
   }

   function input(e) {
     var next = this.nextElementSibling;

     var lastOtp = [].filter.call(otps,function(e) {
          return (
               e.value == "" &&
               [].indexOf.call(otps, e) < [].indexOf.call(otps,this)
               )
     }.bind(this))

     if(lastOtp.length > 0) {
       lastOtp[0].value = this.value
       this.value = ""
       lastOtp[0].nextElementSibling.focus()
     }else if ( this.value.length > 1 ) {
        var f = this.value.slice(0, 1),
            l = this.value.slice(1,2)
        this.value = f
        if((next && next.value == "")
            && this.value !== ""
           ) {
          next.focus()
          next.value = l
        }
     }

   }

   function getOTPValue(callback = null) {
       var otp = ""
       for(var o of otps){
          otp += o.value
       }
       if( callback ) callback( otp , otps);
       else return otp;
   }


   </script>


   <script type="text/javascript">

   var show = document.querySelector("button")
   show.onclick = function() {
       getOTPValue(function (otp, otps) {

          var pass = "CODE1";
          if((otp == "") || ( pass != otp ) ) {
            alert("invalid otp")

          }else {
            alert("success")
          }
       })
   }
   </script>
</body>
</html>