Created
October 3, 2018 13:06
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Sequential number input boxes with auto focus for pure java script
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<html> | |
<body> | |
<input id="number-1" type="text" maxlength="1" onkeypress="goToNext(this, event)" onkeydown="goToPrev(this, event)" /> | |
<input id="number-2" type="text" maxlength="1" onkeypress="goToNext(this, event)" onkeydown="goToPrev(this, event)" /> | |
<input id="number-3" type="text" maxlength="1" onkeypress="goToNext(this, event)" onkeydown="goToPrev(this, event)" /> | |
<input id="number-4" type="text" maxlength="1" onkeypress="goToNext(this, event)" onkeydown="goToPrev(this, event)" /> | |
<input id="number-5" type="text" maxlength="1" onkeypress="goToNext(this, event)" onkeydown="goToPrev(this, event)" /> | |
<input id="number-6" type="text" maxlength="1" onkeypress="goToNext(this, event)" onkeydown="goToPrev(this, event)" /> | |
<script> | |
function goToNext(sender, event) { | |
id = sender.id.split('-')[0]; | |
seq = Number(sender.id.split('-')[1]); | |
seq += 1; | |
if (seq > 6) { | |
return; | |
} | |
document.getElementById(id + '-' + seq).focus(); | |
} | |
function goToPrev(sender, event) { | |
id = sender.id.split('-')[0]; | |
seq = Number(sender.id.split('-')[1]); | |
seq -= 1; | |
if (seq < 1) { | |
return; | |
} | |
if(sender.value.length != 0 || event.keyCode !== 8) { | |
return; | |
} | |
document.getElementById(id + '-' + seq).focus(); | |
} | |
</script> | |
</body> | |
</html> |
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