MVVM架构~knockoutjs系列之验证信息自定义输出~再续

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对于一个项目的表单验证，方式有很多，效果也有很多，具体使用哪种完成取决于产品这边，产品让你用什么，你就要用什么，而做为开发人员，我们要做的就是＂整理近可能多的架构方式＂，这样才可以自由的应变．

对于表单验证，我今天看了新浪的邮箱注册，觉得效果还可以，所以，就写了一个，它利用了knockoutjs里的hasfocus属性，对文本框进行焦点捕捉来实现的．

新浪截图

 

说明：表单元素为焦点时，自动提示要输入的信息，当元素失去焦点时，提示用户输出的正确性，这个功能使用了hasfocus属性，下面看一下代码

ＨＴＭＬ代码

<div class="editor-label">

        账号：

    </div>

    <div class="editor-field">

        <input data-bind='value: name,validationElement:name,hasfocus:selName' />

        <span class="validationWarn" data-bind="visible:selName">请输入用户名账号，它由字母汉字数字组成．</span>

        <span data-bind="visible:!selName()"><span class="validationError" data-bind="validationMessage:name"></span></span>

        <span data-bind="visible:!selName()"><span class="validationSuccess" data-bind="visible:name.isValid()"></span></span>

    </div>

    <div class="editor-label">

        Email：

    </div>

    <div class="editor-field">

        <input data-bind='value: Email,hasfocus:selEmail' />

        <span data-bind="visible:!selEmail()"><span class="validationError" data-bind="validationMessage:Email"></span></span>

        <span class="validationWarn" data-bind="visible:selEmail">请输入你的Email．</span>

        <span data-bind="visible:!selEmail()"><span class="validationSuccess" data-bind="visible:Email.isValid()"></span></span>

    </div>

    <div class="editor-label">

        手机：

    </div>

    <div class="editor-field">

        <input data-bind='value: phone,hasfocus:selPhone' />

        <span data-bind="visible:!selPhone()"><span class="validationError" data-bind="validationMessage:phone"></span></span>

        <span class="validationWarn" data-bind="visible:selPhone">请输入你的电话．</span>

        <span data-bind="visible:!selPhone()"><span class="validationSuccess" data-bind="visible:phone.isValid()"></span></span>

    </div>

    <div style="clear: both;"></div>

    <p>

        <input type="button" value="Create" data-bind="click:Register" />

    </p>

ＪＳ代码

　　　　 var Product = function () {

            var self = this;



            ko.validation.configure({//ko.validation相关配置

                insertMessages: false,//不自动插入错误消息

                errorElementClass: 'errorElementClass',/*元素的ＣＳＳ样式*/

                errorMessageClass: 'errorMessageClass',/*提示信息ＣＳＳ的样式*/

            });



            self.name = ko.observable().extend({

                minLength: 2,

                maxLength: { params: 30, message: "名称最大长度为30个字符" },

                required: {

                    params: true,

                    message: "请输入名称",

                }

            });

            self.selName = ko.observable(false);



            self.phone = ko.observable().extend({

                required: true,

                number: {

                    params: true,

                    message: "电话不合法",

                }

            });

            self.selPhone = ko.observable(false);



            self.Email = ko.observable().extend({

                required: {

                    params: true,

                    message: "请填写Email"

                },

                email: {

                    params: true,

                    message: "Email格式不正确"

                }

            });

            self.selEmail = ko.observable(false);



            self.Register = function () {

                self.errors = ko.validation.group(self);

                if (self.isValid()) {

                    alert("验证成功，数据可以提交");

                } else {



                    self.errors.showAllMessages();

                }

            };

        };

        product = new Product();

        ko.applyBindings(product);

页面截图

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