JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<p>شماره تلفن های ایران </p>
<form method="post" action="email.php">
    <input class="js" type="tel"  min="11" max="11" maxlength="11" type="text" name="FirstName" ><span> :تلفن1</span><br><br>
    <input class="js" type="tel"  min="11" max="11" maxlength="11"  type="text" name="LastName" ><span> :تلفن2</span><br><br>
    <input class="js" type="tel"  min="11" max="11" maxlength="11"  type="text" name="LastName" ><span> :تلفن2</span><br><br>
    <input class="js" type="tel"  min="11" max="11" maxlength="11"  type="text" name="LastName" ><span> :تلفن2</span><br><br>
    <input class="js" type="tel"  min="11" max="11" maxlength="11"  type="text" name="LastName" ><span> :تلفن2</span><br><br>
    <input class="js" type="tel"  min="11" max="11" maxlength="11" type="text" name="FirstName" ><span> :تلفن3</span><br><br>
    <input class="js"  type="tel"  min="11" max="11" maxlength="11" type="text" name="FirstName" ><span> :تلفن4</span><br><br>
    <input class="js" type="tel"  min="11" max="11" maxlength="11" type="text" name="FirstName" ><span> :تلفن5</span><br><br>
    <input class="js" type="tel"  min="11" max="11" maxlength="11" type="text" name="FirstName" ><span> :تلفن6</span><br><br>
    <input class="js" type="tel"  min="11" max="11" maxlength="11" type="text" name="FirstName" ><span> :تلفن7</span><br><br>
    <input class="js" type="tel"  min="11" max="11" maxlength="11" type="text" name="FirstName" ><span> :تلفن8</span><br><br>
    <input class="js" type="tel"  min="11" max="11" maxlength="11" type="text" name="FirstName" ><span> :تلفن9</span><br><br>
    <input class="js" type="tel"  min="11" max="11" maxlength="11" type="text" name="FirstName" ><span> :تلفن10</span><br><br>

    <input type="submit" value="ارسال">
</form>

JavaScript

$('input').on('keyup', function(){
	
  var el = $(this);

  if ( el.val().length >= 11 ){
  	el.nextAll('input').first().focus();
  }
  
})