$(".inputs").keyup(function
() {
if (this.value.length == this.maxLength) {
var $next = $(this).next('.inputs');
if ($next.length)
$(this).next('.inputs').focus();
else
$(this).blur();
}
});
<input
class="inputs" type="text" maxlength="4" />
<input
class="inputs" type="text" maxlength="4" />
<input
class="inputs" type="text" maxlength="4" />
<input
class="inputs" type="text" maxlength="4" />
<input
class="inputs" type="text" maxlength="4" />
<input class="inputs" type="text"
maxlength="4" />