表单信息注册验证

最新推荐文章于 2022-06-11 18:48:44 发布

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本文介绍了一个使用JS和jQuery实现的表单验证示例，包括用户名、昵称、邮箱等字段的有效性检查。通过正则表达式确保数据格式正确。

这里分为了js和jquery 两个版本，挺重要的记录下来

HTML代码

<legend> 请填写注册信息</legend>
  <form action="index.html" method="post">
    <table style="text-align: right;">
      <tr>
        <td>用户名：</td>
        <td><input type="text" name="userName" placeholder="由英文字母和数字组成的4-16位字符，以字母开头">
        </td>
      </tr>
      <tr>
        <td>昵称：</td>
        <td><input type="text" name="nickName" placeholder="由2-6个汉字组成">
        </td>
      </tr>
      <tr>
        <td>邮箱：</td>
        <td><input type="text" name="email" placeholder="邮箱账号@域名。如good@tom.com、whj@sina.com.cn">
        </td>
      </tr>
      <tr>
        <td>密码：</td>
        <td><input type="password" name="pwd" placeholder="由英文字母和数字组成的4-10位字符">
        </td>
      </tr>
      <tr>
        <td>确认密码：</td>
        <td><input type="password" name="pwd2" placeholder="确认密码">
        </td>
      </tr>
      <tr>
        <td>手机号码：</td>
        <td><input type="text" name="phone" placeholder="手机号由11位数字组成，且以13,15,18开头">
        </td>
      </tr>
      <tr>
        <td>出生日期：</td>
        <td><input type="text" name="date" placeholder="出生日期在1990-2009之间">
      </tr>
      <tr>
        <td colspan="2" align="left"><input type="button" name="submit" value="提交"></td>
      </tr>
    </table>
  </form>
</fieldset>

JS 代码

//验证用户名
function check_userName() {
  var userName = document.getElementById("name").value;
  var regName = /[a-zA-Z]\w{4,16}/
  if (userName == "" || userName.trim() == "") {
    document.getElementById("err_name").innerHTML = "请输入用户名";
    return false;
  } else if (!regName.test(userName)) {
    document.getElementById("err_name").innerHTML = "由英文字母和数字组成的4-16位字符，以字母开头";
    return false;
  } else {
    document.getElementById("err_name").innerHTML = "ok!!!";
    return true;
  }
}
//验证昵称
function check_nickName() {
  var nickName = document.getElementById("nick").value;
  var regName = /[\u4e00-\u9fa5]{2,6}/
  if (nickName == "" || nickName.trim() == "") {
    document.getElementById("err_nick").innerHTML = "请输入昵称";
    return false;
  } else if (!regName.test(nickName)) {
    document.getElementById("err_nick").innerHTML = "由2-6个汉字组成";
    return false;
  } else {
    document.getElementById("err_nick").innerHTML = "ok!!!";
    return true;
  }
}
//验证邮箱
function check_email() {
  var email = document.getElementById("email").value;
  var regEmail = /^\w+@\w+((\.\w+)+)$/;
  if (email == "" || email.trim() == "") {
    document.getElementById("err_email").innerHTML = "请输入邮箱";
    return false;
  } else if (!regEmail.test(email)) {
    document.getElementById("err_email").innerHTML = "邮箱账号@域名。如good@tom.com、whj@sina.com.cn";
    return false;
  } else {
    document.getElementById("err_email").innerHTML = "ok!!!";
    return true;
  }
}
//验证密码
function check_pwd() {
  var pwd = document.getElementById("pwd").value;
  var regPwd = /^\w{4,10}$/;
  if (pwd == "" || pwd.trim() == "") {
    document.getElementById("err_pwd").innerHTML = "请输入密码";
    return false;
  } else if (!regPwd.test(pwd)) {
    document.getElementById("err_pwd").innerHTML = "格式错误";
    return false;
  } else {
    document.getElementById("err_pwd").innerHTML = "ok!!!";
    return true;
  }
}
//确认密码
function check_pwd2() {
  var pwd = document.getElementById("pwd").value;
  var pwd2 = document.getElementById("pwd2").value;
  if (pwd2 == "" || pwd2.trim() == "") {
    document.getElementById("err_pwd2").innerHTML = "请输入密码";
    return false;
  } else if (!pwd2.equals(pwd)) {
    document.getElementById("err_pwd2").innerHTML = "两次输入密码不一致";
    return false;
  } else {
    document.getElementById("err_pwd2").innerHTML = "ok!!!";
    return true;
  }
}
//验证手机号
function check_phone() {
  var phone = document.getElementById("phone").value;
  var regPhone = /[13,15,18]\d{9}/;
  if (phone == "" || phone.trim() == "") {
    document.getElementById("err_phone").innerHTML = "请输入手机号";
    return false;
  } else if (!regPhone.test(phone)) {
    document.getElementById("err_phone").innerHTML = "手机号由11位数字组成，且以13,15,18开头";
    return false;
  } else {
    document.getElementById("err_phone").innerHTML = "ok!!!";
    return true;
  }
}
//验证时间
function check_date() {
  var birthday = document.getElementById("birthday").value;
  var regDate = /[13,15,18]\d{9}/;
  if (birthday == "" || birthday.trim() == "") {
    document.getElementById("err_date").innerHTML = "请输入日期";
    return false;
  } else if (!regDate.test(birthday)) {
    document.getElementById("err_date").innerHTML = "出生日期在1990-2009之间";
    return false;
  } else {
    document.getElementById("err_date").innerHTML = "ok!!!";
    return true;
  }
}

jQuery 代码

$(function () {
     var errMsg;
     $.each($("input"), function (i, val) {
       $(val).blur(function () {
         if ($(val).attr("name") == "userName") {
           $(".nameMsg").remove();
           var userName = val.value;
           var regName = /[a-zA-Z]\w{4,16}/
           if (userName == "" || userName.trim() == "") {
             errMsg = "<span class='nameMsg' style='color:red;'>用户名不能为空</span>";
           } else if (!regName.test(userName)) {
             errMsg = "<span class='nameMsg' style='color:red;'>由英文字母和数字组成的4-16位字符，以字母开头</span>";
           } else {
             errMsg = "<span class='nameMsg' style='color:red;'>OK！</span>";
           }
           $(this).parent().append(errMsg);
         } else if ($(val).attr("name") == "nickName") {
           $(".nickMsg").remove();
           var nickName = val.value;
           var regName = /[\u4e00-\u9fa5]{2,6}/
           if (nickName == "" || nickName.trim() == "") {
             errMsg = "<span class='nickMsg' style='color:red;'>昵称不能为空</span>";
           } else if (!regName.test(nickName)) {
             errMsg = "<span class='nickMsg' style='color:red;'>由2-6个汉字组成</span>";
           } else {
             errMsg = "<span class='nickMsg' style='color:red;'>OK！</span>";
           }
           $(this).parent().append(errMsg);
         } else if ($(val).attr("name") == "email") {
           $(".emailMsg").remove();
           var email = val.value;
           var regEmail = /^\w+@\w+((\.\w+)+)$/;
           if (email == "" || email.trim() == "") {
             errMsg = "<span class='emailMsg' style='color:red;'>邮箱不能为空</span>";
           } else if (!regEmail.test(email)) {
             errMsg = "<span class='emailMsg' style='color:red;'>邮箱账号@域名。如good@tom.com、whj@sina.com.cn</span>";
           } else {
             errMsg = "<span class='emailMsg' style='color:red;'>OK！</span>";
           }
           $(this).parent().append(errMsg);
         } else if ($(val).attr("name") == "pwd") {
           $(".pwdMsg").remove();
           var pwd = val.value;
           var regPwd = /^\w{4,10}$/;
           if (pwd == "" || pwd.trim() == "") {
             errMsg = "<span class='pwdMsg' style='color:red;'>密码不能为空</span>";
           } else if (!regPwd.test(pwd)) {
             errMsg = "<span class='pwdMsg' style='color:red;'>格式错误</span>";
           } else {
             errMsg = "<span class='pwdMsg' style='color:red;'>OK！</span>";
           }
           $(this).parent().append(errMsg);
         } else if ($(val).attr("name") == "pwd2") {
           $(".pwd2Msg").remove();
           var pwd2 = val.value;
           var pwd = $("input")[3].value;
           if (pwd2 == "" || pwd2.trim() == "" || !pwd2.equals(pwd)) {
             errMsg = "<span class='pwd2Msg' style='color:red;'>两次输入密码不一致</span>";
           } else {
             errMsg = "<span class='pwd2Msg' style='color:red;'>OK！</span>";
           }
           $(this).parent().append(errMsg);
         } else if ($(val).attr("name") == "phone") {
           $(".phoneMsg").remove();
           var phone = val.value;
           var regPhone = /[13,15,18]\d{9}/;
           if (phone == "" || phone.trim() == "") {
             errMsg = "<span class = 'phoneMsg' style = 'color:red;' > 手机号不能为空 < /span>"
           } else if (!regPhone.test(phone)) {
             errMsg = "<span class = 'phoneMsg' style = 'color:red;' > 格式错误 < /span>"
           } else {
             errMsg = "<span class = 'phoneMsg' style = 'color:red;' > OK！ < /span>"
           }
           $(this).parent().append(errMsg);
         } else if ($(val).attr("name") == "date") {
           $(".dateMsg").remove();
           var birthday = val.value;
           var regDate = /(199\d|200\d)[-/](0\d|1[0-2])[-/](0\d|[1-2]\d|30|31)/;
           if (birthday == "" || birthday.trim() == "") {
             errMsg = "<span class='dateMsg' style='color:red;'>请输入生日</span>";
           } else if (!regDate.test(birthday)) {
             errMsg = "<span class='dateMsg' style='color:red;'>格式错误</span>";
           } else {
             errMsg = "<span class='dateMsg' style='color:red;'>OK！</span>";
           }
           $(this).parent().append(errMsg);
         }
       });
     });
   });