<input id="tmsfzhm" oninput="hiddens2()" pattern="\d*" type="text" placeholder="请输入身份证号码">
function hiddens(){
jiamiValue = document.getElementById('tuominhaoma').value;
zhenshiValue = document.getElementById('zhengjianhaoma').value;
//判断为增加还是删除
var value = document.getElementById('tuominhaoma').value;
if (value.length < zhenshiValue.length) {//删除
var changeLength = zhenshiValue.length-value.length;
zhenshiValue = zhenshiValue.substring(0,zhenshiValue.length-changeLength);
jiamiValue=value;
document.getElementById('tuominhaoma').value = jiamiValue;
} else if (value.length > zhenshiValue.length){//增加
zhenshiValue = zhenshiValue+value.substring(value.length-
<input id="sfzhm" type="hidden" placeholder="请输入身份证号码">
<script>
var jiamiValue = "";
var zhenshiValue = "";function hiddens(){
jiamiValue = document.getElementById('tuominhaoma').value;
zhenshiValue = document.getElementById('zhengjianhaoma').value;
//判断为增加还是删除
var value = document.getElementById('tuominhaoma').value;
if (value.length < zhenshiValue.length) {//删除
var changeLength = zhenshiValue.length-value.length;
zhenshiValue = zhenshiValue.substring(0,zhenshiValue.length-changeLength);
jiamiValue=value;
document.getElementById('tuominhaoma').value = jiamiValue;
} else if (value.length > zhenshiValue.length){//增加
zhenshiValue = zhenshiValue+value.substring(value.length-