基于prototype.js验证框架(validation.js)的三个应用

也是很早发在ajaxcn.org上的一片文章， 现在prototype.js手生了， 看了看都不相信是自己写的：（

最近对prototype.js用的比较多,同时发现了一个基于prototype.js的验证框架: validation.js really easy field validation with prototype,下面是我在开发中用到的三个例子.


前提条件:
首先要在html页面中引入几个js

<script type='text/javascript' src='../script/prototype.js'></script>
<script type='text/javascript' src='../script/validation.js'></script>
<script type='text/javascript' src='../script/effects.js'></script>

(可选)
加几段css

input.disabled {
    border: 1px solid #F2F2F2;
    background-color: #F2F2F2;
}input.required, textarea.required {
    border: 1px solid #00A8E6;
}input.validation-failed, textarea.validation-failed {
    border: 1px solid #FF3300;
    color : #FF3300;
}
input.validation-passed, textarea.validation-passed {
    border: 1px solid #00CC00;
    color : #000;
}.validation-advice {
    margin: 5px 0;
    padding: 5px;
    background-color: #FF3300;
    color : #FFF;
    font-weight: bold;
}

应用一:该例子仅使用前台脚本进行验证
需求:
查询条件
当CSO NO、AGREEMENT NO、流水号中任一项有值时，其他项都可为空

2. 当CSO NO、AGREEMENT NO、流水号三项都为空时，TARIFF CODE为必输，其他项选输

<td class = "label">CSO Number</td>
<td><input type="text" name="csoNumber" id = "csoNumber"></td>
<td class = "label">Agreement Number</td>
<td><input type="text" name="agreementNumber" id = "agreementNumber"></td>
<td class = "label">SequenceNumber Number</td>
<td><input type="text" name="sequenceNumber" id = "sequenceNumber"></td>
<td class = "label">Tariff Code</td>
<td><input type="text" name="tariffCode" id = "tariffCode"></td>
<td colspan = "6" align = "center"><button class = "submit" id = "search">Search</button></td>

window.onload = function(){
    // 注册查询按钮事件
    Event.observe("search", "click", function(){
        var validator = Validation.get("IsEmpty");
        if ([$F("csoNumber"), $F("agreementNumber"), $F("sequenceNumber")].all(validator.test)){
            ["required"].all(Validation.test.bind($("tariffCode")));
        }    });

应用二: 该例子通过ajax结合后台来进行验证
需求:
sapid和password必输
且必须从后台数据库找到sapid和password对应的记录, 否则登陆不成功,并给出提示信息

<form method=post action="requisition.html" id = "frmLogin">
    <table align = "center" style = "height:100%">
        <tr>
            <td>
                <fieldset style = "padding:10px">
                <legend>Login</legend>
                    <table>
                        <tr><td colspan = "2"><input type = "hidden" id = "errMsg"></td></tr>
                        <tr>
                            <td class = "label"><span class = "requiredFlag">*</span>SAP ID</td>
                            <td><input type="text" name="sapId" id = "sapId" class = "required"></td>
                        </tr>
                        <tr>
                            <td class = "label"><span class = "requiredFlag">*</span>Password</td>
                            <td><input type="password" name="password" id = "password" class = "required"></td>
                        </tr>
                        <tr>
                            <td colspan = "2" align = "center"><input type = "submit" class = "submit" value = "Login">
                                <button class = "submit" onclick = "Login.goRegister()">Register</button></td>
                        </tr>
                    </table>
            </fieldset>
            </td>
        </tr>
    </table>
</form>

window.onload = function(){
    // 自定义验证器并注册到Validation中
    var validatorName = "validate-login-info";
    Validation.add(validatorName, "", function(){return false;});    // 验证器初始化
    var validator = new Validation('frmLogin', {stopOnFirst:true, immediate:true});    // 提交前进行后台验证
    Event.observe("frmLogin", "submit", function(ev){
        var result = validator.validate();
        if (result){
            var request = new Ajax.Request(
            "http://localhost:8080/agreement/CheckLoginInfo",  // 提交的URL
            {
                method: 'get',
                asynchronous: false,
                parameters: Form.serialize("frmLogin"),
            });
            // 验证不通过,显示出错信息, 并中止提交操作!
            var transport = request.transport;
            if (transport.responseText != ""){
                Validation.get(validatorName).error = transport.responseText;
                [validatorName].all(Validation.test.bind($("errMsg")));
                Event.stop(ev);
            }
        }
    })
}

应用三:
需求:典型注册应用, 密码和确认密码的一致性验证

<form method=post action="" id = "frmRegister">
    <table align = "center" style = "height:100%">
        <tr>
            <td>
                <fieldset style = "padding:10px">
                <legend>Register</legend>
                    <table>
                        <tr>
                            <td class = "label"><span class = "requiredFlag">*</span>SAP ID</td>
                            <td><input type="text" name="sapId" id = "sapId" class = "required"></td>
                        </tr>
                        <tr>
                            <td class = "label"><span class = "requiredFlag">*</span>Password</td>
                            <td><input type="password" name="password" id="password" class = "required"></td>
                        </tr>
                        <tr>
                            <td class = "label"><span class = "requiredFlag">*</span>Re-Password</td>
                            <td><input type="password" name="repassword" id="repassword" class = "validate-identical"></td>
                        </tr>
                        <tr>
                            <td colspan = "2" align = "center"><input type = "submit" class = "submit" value = "Register"></td>
                        </tr>
                    </table>
            </fieldset>
            </td>
        </tr>
    </table>
</form>

window.onload = function(){
    // 添加password一致性验证
    Validation.add("validate-identical", "the value of password and repassword must be identical", function(v){
        return !Validation.get('IsEmpty').test(v) && v == $F("password");
    })    // 验证器注册
    var validator = new Validation('frmRegister', {stopOnFirst:true, immediate:true});
}