First number goes inside when type last number in text-box

Question

When I type the last number in, the first number goes inside the text-box (it disappears), it's adding one extra space.

After I click outside the text-box it looks good which I need during typing last character.

  #number_text {
        padding-left: 9px;
        letter-spacing: 31px;
        border: 0;
        background-image: linear-gradient(to right, #e1e1e1 70%, rgba(255, 255, 255, 0) 0%);
        background-position: left bottom;
        background-size: 38px 1px;
        background-repeat: repeat-x;
        width: 220px;
        box-sizing: border-box;
        outline:none;
    }

<input type="text" id="number_text" maxlength="6"  pattern="\d{6}" value="1234" >

Help me to get out from this issues. Thanks

Answer 1

Add space for another number and clip the input using clip-path

#number_text {
  padding-left: 9px;
  letter-spacing: 31px;
  border: 0;
  background: 
    repeating-linear-gradient(to right, #e1e1e1 0 26px, transparent 26px 38px)
    bottom/100% 1px no-repeat;
  width: 260px;
  clip-path:polygon(0 0, calc(100% - 38px) 0, calc(100% - 38px) 100%, 0 100%);
  box-sizing: border-box;
  outline: none;
}

<input type="text" id="number_text" maxlength="6" pattern="\d{6}" value="1234">

Or without clip-path by reducing the background-size:

#number_text {
  padding-left: 9px;
  letter-spacing: 31px;
  border: 0;
  background: 
    repeating-linear-gradient(to right, #e1e1e1 0 26px, transparent 26px 38px)
    bottom left/calc(100% - 38px) 1px no-repeat;
  width: 260px;
  box-sizing: border-box;
  outline: none;
}

<input type="text" id="number_text" maxlength="6" pattern="\d{6}" value="1234">

Answer 2

Use this code. its nicely work

var container = document.getElementsByClassName("wrap")[0];
    container.onkeyup = function(e) {
        var target = e.srcElement;
        var maxLength = parseInt(target.attributes["maxlength"].value, 6);
        var myLength = target.value.length;
        if (myLength >= maxLength) {
            var next = target;
            while (next = next.nextElementSibling) {
                if (next == null)
                    break;
                if (next.tagName.toLowerCase() == "input") {
                    next.focus();
                    break;
                }
            }
        }
     else if (myLength <= maxLength)
      {
        prev=target.previousElementSibling;
         while (prev = prev) {
            if (prev == null)
                break;
            if (prev.tagName.toLowerCase() == "input") {
                prev.focus();
                break;
            }
        }
      }

    }

.wrap input {
            border-top: 0;
            border-left: 0;
            border-right: 0;
            border-bottom: 1px solid #000;
            width: 3%;
            display: inline-block;
            outline: 0;
            text-align: center;
        }

<div class="wrap">
        <input type="text" maxlength="1" />
        <input type="text" maxlength="1" />
        <input type="text" maxlength="1" />
        <input type="text" maxlength="1" />
        <input type="text" maxlength="1" />
        <input type="text" maxlength="1" />
    </div>

Answer 3

Try to add this script bellow the input-field:

<script>
  var oInput = document.getElementById('number_text');
  oInput.onkeypress = function(ev) {
    setTimeout(function() {
        if( oInput.value.length > 5 ) {
            oInput.setSelectionRange(0,0);
            oInput.blur();
        }
    }, 0);
  }
</script>

This one forces your input-cursor to the beginning of the input after the 6th character was entered. I also added a blur() to the field so the cursor-jump to the beginning won't stick out.

The timeout is also needed. Without it the entered character will be inserted at the beginning. More about timeout: Is setTimeout a good solution to do async functions with javascript?