JS表单数据验证的正则表达式

checkUserNameflag=false;

 checkPasswordflag=false;

 checkPasswordAgianflag=false;

 checkEmailflag=false;

// 用户名校验

functioncheckUserName() {

 varusername = $("userNeme").value;

 varzz = /^[A-Za-z0-9]{6,}$/;

 if(!zz.test(username)) {

  $("userName_warn").innerHTML =" × 用户名不符合规范";

  checkUserNameflag=false;

 }else{

  /*$("userName_warn").style.color='blue'

  $("userName_warn").innerHTML = "√ 用户名可用";*/

  showUserExist(username);

  checkUserNameflag=true;

 }

}

//重置提示

functionresetWarn(){

 $("userName_warn").innerHTML="";

 $("email_warn").innerHTML="";

 $("password_warn").innerHTML="";

 $("Repassword_warn").innerHTML="";

}

// 密码校验

functioncheckPassword() {

 varpassword1 = $("password").value;

 if(password1.length >= 6 && password1.length <= 15) {

  checkPasswordflag =true;

  $("password_warn").style.color='blue'

  $("password_warn").innerHTML =" √ 密码可用 ";

  checkAgianMiMa();

 }else{

  checkPasswordflag =false;

  $("password_warn").innerHTML =" × 密码至少为 6 个字符 ";

 }

}

functioncheckPasswordAgian() {

 varpassword1 = $("password").value;

 varpassword2 = $("rePassword").value;

 if(password1 == password2) {

  if(password1 =="") {

   $("Repassword_warn").innerHTML =" × 请输入密码 ";

   checkPasswordAgianflag =false;

   return;

  }

  $("Repassword_warn").style.color='blue'

  $("Repassword_warn").innerHTML ="√ 重复输入密码正确";

  checkPasswordAgianflag =true;

 }else{

  checkPasswordAgianflag =false;

  $("Repassword_warn").innerHTML =" × 两次密码输入不同 ";

 }

}

functioncheckEmail(){

 //对电子邮件的验证

  varmyreg = /^([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/;

  varemail=$("email").value;

  if(!myreg.test(email)){

   checkEmailflag=false;

    $("email_warn").style.color='red'

   $("email_warn").innerHTML =" × 邮箱格式不符合规范";

  }else{

   checkEmailflag=true;

   $("email_warn").style.color='blue'

   $("email_warn").innerHTML ="√ 邮箱格式正确";

  }

}

functionsubmitCheck(){

 alert(checkUserNameflag);

 if(checkUserNameflag==false|| checkPasswordflag==false|| checkPasswordflag==false

   ||checkPasswordAgianflag==false|| checkEmailflag==false){

  return;

 }

}

function$(id){

 returndocument.getElementById(id);

}