OTP Pin Input

Six boxes with auto-advance and paste support

How to use it

Paste the HTML where the forms & inputs should appear.
Add the CSS to your stylesheet. All classes are prefixed, so nothing clashes with your own styles.
Add the JavaScript and call init() with the element that contains the HTML.

<!-- OTP Pin Input · NedDev · eigen werk. -->
<div class="jouw-container">
<div class="otp-wrap"><input class="otp-box" maxlength="1" inputmode="numeric"><input class="otp-box" maxlength="1" inputmode="numeric"><input class="otp-box" maxlength="1" inputmode="numeric"><input class="otp-box" maxlength="1" inputmode="numeric"><input class="otp-box" maxlength="1" inputmode="numeric"><input class="otp-box" maxlength="1" inputmode="numeric"></div>
</div>

/* OTP Pin Input · NedDev · eigen werk. */
.otp-wrap{display:flex;gap:10px;font-family:'Switzer',sans-serif}
.otp-box{width:46px;height:56px;text-align:center;font-size:24px;font-weight:600;color:#0a0a0a;background:#fff;border:1px solid rgba(10,10,10,.12);border-radius:10px;outline:none;transition:border-color .15s,box-shadow .15s,transform .15s}
.otp-box:focus{border-color:#F5480F;box-shadow:0 0 0 3px rgba(245,72,15,.15)}
.otp-box.otp-filled{border-color:#0a0a0a;transform:translateY(-2px)}

// OTP Pin Input · NedDev · eigen werk.
// root = het element waarin de HTML staat
function init(root){
root=root.querySelector('.otp-wrap')||root;var bx=[].slice.call(root.querySelectorAll('.otp-box'));bx.forEach(function(b,i){b.addEventListener('input',function(){b.value=b.value.replace(/\D/g,'');b.classList.toggle('otp-filled',!!b.value);if(b.value&&bx[i+1])bx[i+1].focus();});b.addEventListener('keydown',function(e){if(e.key==='Backspace'&&!b.value&&bx[i-1])bx[i-1].focus();});b.addEventListener('paste',function(e){e.preventDefault();var d=(e.clipboardData.getData('text')||'').replace(/\D/g,'').slice(0,bx.length);d.split('').forEach(function(c,k){if(bx[k]){bx[k].value=c;bx[k].classList.add('otp-filled');}});if(bx[d.length-1])bx[Math.min(d.length,bx.length-1)].focus();});});
}
init(document.querySelector('.jouw-container'));

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