一,簡單的表單驗證javascript
/*表單驗證給須要驗證的input[type='text']加上正則*/ $('.login_form').submit(function(){ var status=false; $(".login_form input[type='text']").each(function(){ var art=$(this).val(); var reg=$(this).attr('reg'); if(reg){ if(art.match(reg) === null){ $(this).parents('.td_pren').siblings('.error').html(" <img src='images/error.jpg' />"); status=true; } } }) if(status){ return false;//中止瀏覽器提交 } });
二,表單驗證插件 jquery.validate.jshtml
jQuery校驗官網地址:http://bassistance.de/jquery-plugins/jquery-plugin-validationjava
1、導入js庫jquery
<script type="text/javascript" src="<%=path %>/validate/jquery-1.6.2.min.js"></script> <script type="text/javascript" src="<%=path %>/validate/jquery.validate.min.js"></script>
2、默認校驗規則git
(1)、required:true 必輸字段 (2)、remote:"remote-valid.jsp" 使用ajax方法調用remote-valid.jsp驗證輸入值 (3)、email:true 必須輸入正確格式的電子郵件 (4)、url:true 必須輸入正確格式的網址 (5)、date:true 必須輸入正確格式的日期,日期校驗ie6出錯,慎用 (6)、dateISO:true 必須輸入正確格式的日期(ISO),例如:2009-06-23,1998/01/22 只驗證格式,不驗證有效性 (7)、number:true 必須輸入合法的數字(負數,小數) (8)、digits:true 必須輸入整數 (9)、creditcard:true 必須輸入合法的信用卡號 (10)、equalTo:"#password" 輸入值必須和#password相同 (11)、accept: 輸入擁有合法後綴名的字符串(上傳文件的後綴) (12)、maxlength:5 輸入長度最可能是5的字符串(漢字算一個字符) (13)、minlength:10 輸入長度最小是10的字符串(漢字算一個字符) (14)、rangelength:[5,10] 輸入長度必須介於 5 和 10 之間的字符串")(漢字算一個字符) (15)、range:[5,10] 輸入值必須介於 5 和 10 之間 (16)、max:5 輸入值不能大於5 (17)、min:10 輸入值不能小於10
3、默認的提示ajax
messages: { required: "This field is required.", remote: "Please fix this field.", email: "Please enter a valid email address.", url: "Please enter a valid URL.", date: "Please enter a valid date.", dateISO: "Please enter a valid date (ISO).", dateDE: "Bitte geben Sie ein g眉ltiges Datum ein.", number: "Please enter a valid number.", numberDE: "Bitte geben Sie eine Nummer ein.", digits: "Please enter only digits", creditcard: "Please enter a valid credit card number.", equalTo: "Please enter the same value again.", accept: "Please enter a value with a valid extension.", maxlength: $.validator.format("Please enter no more than {0} characters."), minlength: $.validator.format("Please enter at least {0} characters."), rangelength: $.validator.format("Please enter a value between {0} and {1} characters long."), range: $.validator.format("Please enter a value between {0} and {1}."), max: $.validator.format("Please enter a value less than or equal to {0}."), min: $.validator.format("Please enter a value greater than or equal to {0}.") },
如須要修改,可在js代碼中加入:瀏覽器
$.extend($.validator.messages, { required: "必選字段", remote: "請修正該字段", email: "請輸入正確格式的電子郵件", url: "請輸入合法的網址", date: "請輸入合法的日期", dateISO: "請輸入合法的日期 (ISO).", number: "請輸入合法的數字", digits: "只能輸入整數", creditcard: "請輸入合法的信用卡號", equalTo: "請再次輸入相同的值", accept: "請輸入擁有合法後綴名的字符串", maxlength: $.validator.format("請輸入一個長度最可能是 {0} 的字符串"), minlength: $.validator.format("請輸入一個長度最少是 {0} 的字符串"), rangelength: $.validator.format("請輸入一個長度介於 {0} 和 {1} 之間的字符串"), range: $.validator.format("請輸入一個介於 {0} 和 {1} 之間的值"), max: $.validator.format("請輸入一個最大爲 {0} 的值"), min: $.validator.format("請輸入一個最小爲 {0} 的值") });
推薦作法,將此文件放入messages_cn.js中,在頁面中引入框架
<script type="text/javascript" src="<%=path %>/validate/messages_cn.js"></script>
實例用法less
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>jQuery Validate驗證框架詳解</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <script type="text/javascript" src="<%=request.getContextPath()%>/validate/jquery-1.6.2.min.js"></script> <script type="text/javascript" src="<%=request.getContextPath()%>/validate/jquery.validate.min.js"></script> <script type="text/javascript" src="<%=path %>/validate/messages_cn.js"></script> <script type="text/javascript"> $(function(){ var validate = $("#myform").validate({ debug: true, //調試模式取消submit的默認提交功能 //errorClass: "label.error", //默認爲錯誤的樣式類爲:error focusInvalid: false, //當爲false時,驗證無效時,沒有焦點響應 onkeyup: false, submitHandler: function(form){ //表單提交句柄,爲一回調函數,帶一個參數:form alert("提交表單"); form.submit(); //提交表單 }, rules:{ myname:{ required:true }, email:{ required:true, email:true }, password:{ required:true, rangelength:[3,10] }, confirm_password:{ equalTo:"#password" } }, messages:{ myname:{ required:"必填" }, email:{ required:"必填", email:"E-Mail格式不正確" }, password:{ required: "不能爲空", rangelength: $.format("密碼最小長度:{0}, 最大長度:{1}。") }, confirm_password:{ equalTo:"兩次密碼輸入不一致" } } }); }); </script> </head> <body> <form id="myform" method="post" action=""> <p> <label for="myname">用戶名:</label> <!-- id和name最好同時寫上 --> <input id="myname" name="myname" /> </p> <p> <label for="email">E-Mail:</label> <input id="email" name="email" /> </p> <p> <label for="password">登錄密碼:</label> <input id="password" name="password" type="password" /> </p> <p> <label for="confirm_password">確認密碼:</label> <input id="confirm_password" name="confirm_password" type="password" /> </p> <p> <input class="submit" type="submit" value="當即註冊" /> </p> </form> </body> </html>