Discussion on: How to auto verify OTP on the web using the new Web OTP API?

[VikramJS]

Hey Jyotishman. I am using same for a while but it pop up everytime an sms having OTP received from different source like bank, zomatoetc.,

how can i prevent it. pop up everytime a new OTP SMS received.
I tried on button clicked but no luck.

with correct domain name
dev-to-uploads.s3.amazonaws.com/i/...

with wrong domain name.
dev-to-uploads.s3.amazonaws.com/i/...

[Jyotishman Saikia]

hi, Can you send the sample code so i that i can assist u better where you might be wrong.

[VikramJS]

This is form page.

< form action="ok.html" method="POST" >


  < input type="number" class="form-control" id="mobileNo" placeholder="10 Digit Mobile No">

< button class="btn btn-primary" onfocus="test()" name="sendOTP">Validate

  

  < input type="text" class="form-control" id="OTP" placeholder="OTP" autocomplete="one-time-code">


  < button class="btn btn-primary btn-style" id="validateOTP">Verify

< /form>

And this is script.

function test(){


if ('OTPCredential' in window) {


  console.log("in OTPCredentials");


  window.addEventListener("DOMContentLoaded", e => {


    const input = document.querySelector('input[autocomplete="one-time-code"]');


    const button = document.querySelector("button[type='submit']");


    if (!input) return;


    const ac = new AbortController();


    const form = input.closest('form');


    if (form) {


      form.addEventListener('submit', e => {


        console.log("ac.abort() is called");


        ac.abort();


      });


    } 


    console.log("WebOTP API is called");


    navigator.credentials.get({


      otp: { transport:['sms'] },


      signal: ac.signal


    }).then(otp => {


      input.value = otp.code;


      if (form) form.submit();


      console.log("submit() is called");


      navigator.credentials.preventSilentAccess();


    }).catch(err => {


      console.log(err);


    });


  });


}


  const message = document.querySelector('#message');


    message.innerText = Your OTP is: 123456.\n@${window.location.host} #123456;


}

[Sumit Kandoi]

@oceanrational : I have one doubt on your above code why you gave

const form = input.closest('form');
form id should come instead of form. What do you think?