close
<input type="text" name="A" maxlength="2" onKeyUp="next(this,'B')" size="1"/>
<input type="text" name="B" maxlength="2" onKeyUp="next(this,'C')" size="1"/>
<input type="text" name="C" maxlength="2" onKeyUp="next(this,'D')" size="1"/>
以此類推...
<script>
function next(obj,next) {
if (obj.value.length == obj.maxLength)
obj.form.elements[next].focus();
}
</script>
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