Konckout第四个实例：组合类型数据绑定 -- 日期双向绑定显示

<!doctype html>

<html >

  <head>

  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">

  <title>

    KNOCKOUT LESSON

  </title>

  <link rel="stylesheet" type="text/css" href="css/main.css" />

  <style>

  #content1{padding:16px;}

  </style>

  <script type="text/javascript" src="scripts/knockout30.js"></script>

</head>

<body>

    <div id="content1">

        Year:<input data-bind="value:Year"><br/>

        Month:<input data-bind="value:Month"><br/>

        Day:<input data-bind="value:Day"><br/>

        Date:<span data-bind="html: Date " ></span><br/>

        <!--Date:<span data-bind="html:Year()+'-'+Month()+'-'+Day()"></span>-->

        <input data-bind="value:Date" />

    </div>

    <script type="text/javascript" src="scripts/jQuery183.js"></script>

    <script>

        $(document).ready(function(){

            var  ViewModel = function(){

                var self = this;

                self.Year = ko.observable("");

                self.Month = ko.observable("");

                self.Day = ko.observable("");

//                self.Date = ko.computed(function(){

//                    return self.Year()+'年'+self.Month()+'月'+self.Day()+'日';

//                });

                self.Date = ko.pureComputed({

                    write: function(value){

                        var indexOfYear = value.indexOf('年');

                        var indexOfMonth=value.indexOf('月');

                        var indexOfDay=value.indexOf('日');

                        self.Year(value.substring(,indexOfYear));

                        self.Month(value.substring(indexOfYear+,indexOfMonth));

                        self.Day(value.substring(indexOfMonth+,indexOfDay));

                    },

                    read: function(){

                        return self.Year()+'年'+self.Month()+'月'+self.Day()+'日';

                    },

                    owner:self

                });

            };

            var  currentViewModel = new ViewModel();

            ko.applyBindings(currentViewModel);

        });

    </script>

</body>

</html>

使用正则过滤：当输入的是不符合规则的日期时：

<!DOCTYPE html>

<html>

    <head>

        <meta charset="utf-8" />

        <title></title>

        <style>

            #content1{padding: 20px;}

        </style>

    </head>

    <body>

        <div id="content1">

            Year:<input data-bind="value:Year" /><br />

            Month:<input data-bind="value:Month" /><br />

            Day:<input data-bind="value:Day" /><br />

            Date:<span data-bind="html:Date"></span><br />

            <input data-bind="value:Date" />

        </div>

        <script src="scripts/jQuery183.js"></script>

        <script src="scripts/knockout30.js"></script>

    <script>

        $(document).ready(function(){

            var  ViewModel = function(){

                var self = this;

                self.Year = ko.observable("");

                self.Month = ko.observable("");

                self.Day = ko.observable("");

//                self.Date = ko.computed(function(){

//                    return self.Year()+'年'+self.Month()+'月'+self.Day()+'日';

//                });

                self.Date = ko.pureComputed({

                    write: function(value){

                        var indexOfYear = value.indexOf('年');

                        var indexOfMonth=value.indexOf('月');

                        var indexOfDay=value.indexOf('日');

                        var year = value.substring(,indexOfYear);

                        self.Year(year);

                        if(!/^\d()$/.test(year)){

                            alert('请输入四位阿拉伯数字的年份');

                            return false;

                        }

                        var month = value.substring(indexOfYear+,indexOfMonth);

                        self.Month(month);

                        if(!/^[-][-]$/.test(month)){

                            alert('请输入合法月份数字');

                            return false;

                        }

                        var day = value.substring(indexOfMonth+,indexOfDay);

                        self.Day(day);

                        if(!/^[-][-]$/.test(day)){

                            alert('请输入合法天数数字');

                            return false;

                        }

                    },

                    read: function(){

                        return self.Year()+'年'+self.Month()+'月'+self.Day()+'日';

                    },

                    owner:self

                });

            };

            var  currentViewModel = new ViewModel();

            ko.applyBindings(currentViewModel);

        });

    </script>

    </body>

</html>

巴特西

Konckout第四个实例：组合类型数据绑定 -- 日期双向绑定显示

最新文章

热门文章