這些經常用到的驗證所以寫成函式好使用一些：

// 身份證號驗證

var aCity={11:"北京",12:"天津",13:"河北",14:"山西",15:"內蒙古",21:"遼寧",22:"吉林",23:"黑龍江",31:"上海",32:"江蘇",33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山東",41:"河南",42:"湖北",43:"湖南",44:"廣東",45:"廣西",46:"海南",50:"重慶",51:"四川",52:"貴州",53:"雲南",54:"西藏",61:"陝西",62:"甘肅",63:"青海",64:"寧夏",65:"新疆",71:"臺灣"
 
,81:"香港",82:"澳門",91:"國外"} 
function isCardID(sId){ 
  var iSum=0 ;
  var info="" ;
  if(!/^\d{17}(\d|x)$/i.test(sId)) return "身份證長度或格式錯誤"; 
  sId=sId.replace(/x$/i,"a"); 
  if(aCity[parseInt(sId.substr(0,2))]==null) return "身份證地區非法"; 
  sBirthday=sId.substr(6,4)+"-"+Number(sId.substr(10,2))+"-"+Number(sId.substr(12
 
,2)); 
  var d=new Date(sBirthday.replace(/-/g,"/")) ;
  if(sBirthday!=(d.getFullYear()+"-"+ (d.getMonth()+1) + "-" + d.getDate()))return "身份證上的出生日期非法"; 
  for(var i = 17;i>=0;i --) iSum += (Math.pow(2,i) % 11) * parseInt(sId.charAt(17 - i),11) ;
  if(iSum%11!=1) return "身份證號非法"; 
  //aCity[parseInt(sId.substr(0,2))]+","+sBirthday+","+(sId.substr(16,1)%2?"男":"女");//此次還可以判斷出輸入的身份證號的人性別
 

  return true;
}

function isTelOk(tel){
    let regex = /0?(13|14|15|17|18|19)[0-9]{9}/;
    if(!regex.test(tel)) return "手機號格式錯誤！";
    return true;
}

function isChines(name){
    let regex = /[\u4e00-\u9fa5]/ ;
    if(!regex.test(name)) return '姓名必須為中文';
    return true;
}

使用的話直接看案例吧：

let isName = isChines(relName); 
let isTel = isTelOk(tel);
let isCard = isCardID(idcard);
if(relName == '' || isName!=true){
    mui.toast(isName);
    return;
}else if(tel=='' || isTel !=true){
    mui.toast(isTel);
    return;
}else if(idcard =='' || isCard!=true){
    mui.toast(isCard);
    return;
}