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新瓶旧酒ASP.NET AJAX(7) - 客户端脚本编程(Sys命名空间下的类)
作者:
webabcd
介绍
Sys命名空间是Microsoft AJAX Library的根命名空间。本文主要学习一下其中的Application类、ApplicationLoadEventArgs类、CultureInfo类和StringBuilder类。
关键
1、Application Class
·init事件 - 脚本加载完毕,对象创建之前。
·load事件 - 对象被创建和初始化。可以用pageLoad()
·unload事件 - window.unload时。可以用pageUnload()
·notifyScriptLoaded() - 通知ScriptManager某段脚本已经加载完毕
2、ApplicationLoadEventArgs Class
·components - 最后一次触发load事件时创建的Components
·isPartialLoad - 是否是部分刷新
3、CultureInfo Class
·CurrentCulture字段 - 当前的Culture,返回CurrentCulture对象
·name字段 - Culture的名称
·dateTimeFormat - 获得dateTimeFormat对象,其内有n多格式化类型
·numberFormat - 获得numberFormat对象,其内有n多格式化类型
4、StringBuilder Class
·append(text) - 添加指定字符串到StringBuilder对象的结尾
·appendLine() - 添加一个换行符到StringBuilder对象的结尾
·appendLine(text) - 添加指定字符串到StringBuilder对象的结尾并添加一个换行符
·clear() - 清除StringBuilder对象所有内容
·isEmpty() - StringBuilder对象的内容是否为空
·toString() - 将StringBuilder对象的内容转换为字符串
·toString(separator) - 在StringBuilder对象内的每一个元素的结尾处添加指定字符串
5、
其它请查看官方文档
示例
CustomButton.js
Type.registerNamespace(
"
Demo
"
);
Demo.CustomButton
=
function
(element)
{
// 该类继承自Sys.UI.Control,调用基类构造函数
Demo.CustomButton.initializeBase(this, [element]);
this._clickDelegate = null;
this._hoverDelegate = null;
this._unhoverDelegate = null;
}
Demo.CustomButton.prototype
=
{
// 定义text属性 - 元素显示的信息
get_text: function()
{
// element - Sys.UI.Control的属性
return this.get_element().innerHTML;
},
set_text: function(value)
{
this.get_element().innerHTML = value;
},
// 添加或移除click事件
add_click: function(handler)
{
// events - Sys.Component的属性
this.get_events().addHandler('click', handler);
},
remove_click: function(handler)
{
this.get_events().removeHandler('click', handler);
},
// 添加或移除hover事件
add_hover: function(handler)
{
this.get_events().addHandler('hover', handler);
},
remove_hover: function(handler)
{
this.get_events().removeHandler('hover', handler);
},
// 添加或移除unhover事件
add_unhover: function(handler)
{
this.get_events().addHandler('unhover', handler);
},
remove_unhover: function(handler)
{
this.get_events().removeHandler('unhover', handler);
},
// 释放资源
dispose: function()
{
var element = this.get_element();
if (this._clickDelegate)
{
// Sys.UI.DomEvent removeHandler()
$removeHandler(element, 'click', this._clickDelegate);
delete this._clickDelegate;
}
if (this._hoverDelegate)
{
$removeHandler(element, 'focus', this._hoverDelegate);
$removeHandler(element, 'mouseover', this._hoverDelegate);
delete this._hoverDelegate;
}
if (this._unhoverDelegate)
{
$removeHandler(element, 'blur', this._unhoverDelegate);
$removeHandler(element, 'mouseout', this._unhoverDelegate);
delete this._unhoverDelegate;
}
Demo.CustomButton.callBaseMethod(this, 'dispose');
},
// 初始化
initialize: function()
{
var element = this.get_element();
if (!element.tabIndex) element.tabIndex = 0;
if (this._clickDelegate === null)
{
// Function.createDelegate用来创建一个调用“this”上下文下的特定函数的委托
this._clickDelegate = Function.createDelegate(this, this._clickHandler);
}
// Sys.UI.DomEvent addHandler()
$addHandler(element, 'click', this._clickDelegate);
if (this._hoverDelegate === null)
{
this._hoverDelegate = Function.createDelegate(this, this._hoverHandler);
}
$addHandler(element, 'mouseover', this._hoverDelegate);
$addHandler(element, 'focus', this._hoverDelegate);
if (this._unhoverDelegate === null)
{
this._unhoverDelegate = Function.createDelegate(this, this._unhoverHandler);
}
$addHandler(element, 'mouseout', this._unhoverDelegate);
$addHandler(element, 'blur', this._unhoverDelegate);
Demo.CustomButton.callBaseMethod(this, 'initialize');
},
// click事件处理器
_clickHandler: function(event)
{
var h = this.get_events().getHandler('click');
if (h) h(this, Sys.EventArgs.Empty);
},
// hover事件处理器
_hoverHandler: function(event)
{
var h = this.get_events().getHandler('hover');
if (h) h(this, Sys.EventArgs.Empty);
},
// unhover事件处理器
_unhoverHandler: function(event)
{
var h = this.get_events().getHandler('unhover');
if (h) h(this, Sys.EventArgs.Empty);
}
}
Demo.CustomButton.registerClass('Demo.CustomButton', Sys.UI.Control);
//
通知ScriptManager这段脚本已经加载完毕
if
(
typeof
(Sys)
!==
'undefined') Sys.Application.notifyScriptLoaded();
Application.aspx
<%
@ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="Application.aspx.cs"
Inherits="ClientScripting_Sys_Application" Title="init Event和load Event和unload Event"
%>
<
asp:Content
ID
="Content1"
ContentPlaceHolderID
="ContentPlaceHolder1"
runat
="Server"
>
<
asp:ScriptManagerProxy
ID
="ScriptManagerProxy1"
runat
="Server"
>
<
Scripts
>
<asp:ScriptReference Path="~/ClientScripting/Sys/CustomButton.js" />
</
Scripts
>
</
asp:ScriptManagerProxy
>
<
script
type
="text/javascript"
>
Sys.Application.add_init(applicationInitHandler);
function applicationInitHandler()
{
// Sys.Component.create()
$create
(
Demo.CustomButton,
{text: '自定义Button(Button1)'},
{click: doClick, hover: doHover, unhover: doUnhover},
null,
$get('Button1')
);
$create
(
Demo.CustomButton,
{text: '自定义Button(Label1)'},
{click: doClick, hover: doHover, unhover: doUnhover},
null,
$get('Label1')
);
}
function doClick(sender, e)
{
Sys.Debug.trace("鼠标点击" + sender.get_id());
}
function doHover(sender, e)
{
Sys.Debug.trace("鼠标经过" + sender.get_id());
}
function doUnhover(sender, e)
{
Sys.Debug.trace("鼠标离开" + sender.get_id());
}
Sys.Application.add_load(applicationLoadHandler);
function applicationLoadHandler(sender, e)
{
alert("ApplicationLoad");
// isPartialLoad - 是否是部分刷新
Sys.Debug.trace('是否是部分刷新:' + e.get_isPartialLoad());
for (var i=0; i<e.get_components().length; i++)
{
// components - 最后一次触发load事件时创建的Components
Sys.Debug.trace('最后一次触发load事件时创建的Component:' + e.get_components()[i].get_id());
}
}
Sys.Application.add_unload(applicationUnloadHandler);
function applicationUnloadHandler()
{
alert('ApplicationUnload');
}
function pageLoad()
{
// Sys.Application.findComponent() - 根据id查找Component
// Sys.Application.findComponent(id, parent) - parent可选
alert($find('Button1').get_id());
}
</
script
>
<
script
type
="text/javascript"
>
function listComponents()
{
// getComponents() - 获得所有Component(数组)
var c = Sys.Application.getComponents();
for (var i=0; i<c.length; i++)
{
var id = c[i].get_id();
var type = Object.getTypeName(c[i]);
Sys.Debug.trace('Component:' + i + ': id=' + id + ', type=' + type);
}
}
</
script
>
<
p
>
<
button
type
="button"
id
="Button1"
>
</
button
>
<
span
id
="Label1"
></
span
>
</
p
>
<
p
>
<
input
type
="button"
id
="Button2"
value
="列举所有Component"
onclick
="listComponents()"
/>
</
p
>
<
p
>
<
textarea
id
="TraceConsole"
style
="width: 500px; height: 400px;"
></
textarea
>
</
p
>
</
asp:Content
>
运行结果
1、页面加载
弹出框,信息:ApplicationLoad
是否是部分刷新:false
最后一次触发load事件时创建的Component:Button1
最后一次触发load事件时创建的Component:Label1
弹出框,信息:Button1
2、鼠标点击、经过和离开“自定义Button(Button1)”或“自定义Button(Label1)”
有相应的提示
3、单击“列举所有Component”按钮
Component:0: id=Button1, type=Demo.CustomButton
Component:1: id=Label1, type=Demo.CustomButton
4、关闭浏览器
弹出框,信息:ApplicationUnload
CultureInfo.aspx(注:设置ScriptManager的EnableScriptGlobalization="True")
<%
@ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="CultureInfo.aspx.cs"
Inherits="ClientScripting_Sys_CultureInfo" Title="CultureInfo" Culture="auto"
UICulture="auto"
%>
<
asp:Content
ID
="Content1"
ContentPlaceHolderID
="ContentPlaceHolder1"
runat
="Server"
>
<
script
runat
="Server"
>
protected override void InitializeCulture()
{
string s = Request.QueryString["currentculture"];
if (!String.IsNullOrEmpty(s))
{
System.Threading.Thread.CurrentThread.CurrentUICulture = new System.Globalization.CultureInfo(s);
System.Threading.Thread.CurrentThread.CurrentCulture = System.Globalization.CultureInfo.CreateSpecificCulture(s);
}
}
</
script
>
<
p
>
<
a
href
="?currentculture=zh-cn"
>
中文
</
a
>
<
a
href
="?currentculture=en-us"
>
英文
</
a
>
<
a
href
="?currentculture=sq"
>
阿尔巴尼亚语
</
a
>
</
p
>
<
div
>
<
asp:Label
ID
="Label1"
runat
="server"
Text
="Label"
></
asp:Label
>
<
asp:Label
ID
="Label2"
runat
="server"
Text
="Label"
></
asp:Label
>
<
asp:Label
ID
="Label3"
runat
="server"
Text
="Label"
></
asp:Label
>
<
asp:Label
ID
="Label4"
runat
="server"
Text
="Label"
></
asp:Label
>
</
div
>
<
script
type
="text/javascript"
>
// 创建一个Sys.CultureInfo对象
var cultureObject = Sys.CultureInfo.CurrentCulture;
// 当前Culture的名称
var cultureName = cultureObject.name;
// 获得dateTimeFormat对象
var dtfObject = cultureObject.dateTimeFormat;
// 创建一个具有各种格式化类型的数组
var myArray =
[
'AMDesignator',
'Calendar',
'DateSeparator',
'FirstDayOfWeek',
'CalendarWeekRule',
'FullDateTimePattern',
'LongDatePattern',
'LongTimePattern',
'MonthDayPattern',
'PMDesignator',
'RFC1123Pattern',
'ShortDatePattern',
'ShortTimePattern',
'SortableDateTimePattern',
'TimeSeparator',
'UniversalSortableDateTimePattern',
'YearMonthPattern',
'AbbreviatedDayNames',
'ShortestDayNames',
'DayNames',
'AbbreviatedMonthNames',
'MonthNames',
'IsReadOnly',
'NativeCalendarName',
'AbbreviatedMonthGenitiveNames',
'MonthGenitiveNames'
];
var result = '区域名称:' + cultureName;
for (var i = 0, l = myArray.length; i < l; i++)
{
var arrayVal = myArray[i];
if (typeof(arrayVal) !== 'undefined')
{
result += "<tr><td>" + arrayVal + "</td><td>" + eval("dtfObject." + arrayVal) + '</td></tr>';
}
}
var resultHeader = "<tr><td><b>格式化类型</b></td><td><b>格式化值</b></td></tr>"
$get('<%= Label1.ClientID %>').innerHTML = "<table border=1>" + resultHeader + result +"</table>";
var d = new Date();
$get('<%= Label2.ClientID %>').innerHTML = "<p/><h3>dateTimeFormat示例:" +
d.localeFormat(Sys.CultureInfo.CurrentCulture.dateTimeFormat.FullDateTimePattern) + "</H3>";
// 获得numberFormat对象
nfObject = cultureObject.numberFormat;
// 创建一个具有各种格式化类型的数组
myArray =
[
'CurrencyDecimalDigits',
'CurrencyDecimalSeparator',
'IsReadOnly',
'CurrencyGroupSizes',
'NumberGroupSizes',
'PercentGroupSizes',
'CurrencyGroupSeparator',
'CurrencySymbol',
'NaNSymbol',
'CurrencyNegativePattern',
'NumberNegativePattern',
'PercentPositivePattern',
'PercentNegativePattern',
'NegativeInfinitySymbol',
'NegativeSign',
'NumberDecimalDigits',
'NumberDecimalSeparator',
'NumberGroupSeparator',
'CurrencyPositivePattern',
'PositiveInfinitySymbol',
'PositiveSign',
'PercentDecimalDigits',
'PercentDecimalSeparator',
'PercentGroupSeparator',
'PercentSymbol',
'PerMilleSymbol',
'NativeDigits',
'DigitSubstitution'
];
result = '区域名称:' + cultureName;
for (var i = 0, l = myArray.length; i < l; i++)
{
var arrayVal = myArray[i];
if (typeof(arrayVal) !== 'undefined')
{
result += "<tr><td>" + arrayVal + "</td><td>" + eval("nfObject." + arrayVal) + '</td></tr>';
}
}
var resultHeader = "<tr><td><b>格式化类型</b></td><td><b>格式化值</b></td></tr>"
$get('<%= Label3.ClientID %>').innerHTML = "<table border=1>" + resultHeader + result + "</table>";
var n = 99.987;
$get('<%= Label4.ClientID %>').innerHTML = "<p/><h3>numberFormat示例:" + n.localeFormat("C") + "<h3>";
</
script
>
</
asp:Content
>
运行结果
格式化类型 |
格式化值 |
区域名称:zh-CN
AMDesignator |
上午 |
Calendar |
[object Object] |
DateSeparator |
- |
FirstDayOfWeek |
0 |
CalendarWeekRule |
0 |
FullDateTimePattern |
yyyy'年'M'月'd'日' H:mm:ss |
LongDatePattern |
yyyy'年'M'月'd'日' |
LongTimePattern |
H:mm:ss |
MonthDayPattern |
M'月'd'日' |
PMDesignator |
下午 |
RFC1123Pattern |
ddd, dd MMM yyyy HH':'mm':'ss 'GMT' |
ShortDatePattern |
yyyy-M-d |
ShortTimePattern |
H:mm |
SortableDateTimePattern |
yyyy'-'MM'-'dd'T'HH':'mm':'ss |
TimeSeparator |
: |
UniversalSortableDateTimePattern |
yyyy'-'MM'-'dd HH':'mm':'ss'Z' |
YearMonthPattern |
yyyy'年'M'月' |
AbbreviatedDayNames |
日,一,二,三,四,五,六 |
ShortestDayNames |
日,一,二,三,四,五,六 |
DayNames |
星期日,星期一,星期二,星期三,星期四,星期五,星期六 |
AbbreviatedMonthNames |
一月,二月,三月,四月,五月,六月,七月,八月,九月,十月,十一月,十二月, |
MonthNames |
一月,二月,三月,四月,五月,六月,七月,八月,九月,十月,十一月,十二月, |
IsReadOnly |
true |
NativeCalendarName |
公历 |
AbbreviatedMonthGenitiveNames |
一月,二月,三月,四月,五月,六月,七月,八月,九月,十月,十一月,十二月, |
MonthGenitiveNames |
一月,二月,三月,四月,五月,六月,七月,八月,九月,十月,十一月,十二月, |
dateTimeFormat示例:2007年6月22日 8:23:27
格式化类型 |
格式化值 |
区域名称:zh-CN
CurrencyDecimalDigits |
2 |
CurrencyDecimalSeparator |
. |
IsReadOnly |
true |
CurrencyGroupSizes |
3 |
NumberGroupSizes |
3 |
PercentGroupSizes |
3 |
CurrencyGroupSeparator |
, |
CurrencySymbol |
¥ |
NaNSymbol |
非数字 |
CurrencyNegativePattern |
2 |
NumberNegativePattern |
1 |
PercentPositivePattern |
1 |
PercentNegativePattern |
1 |
NegativeInfinitySymbol |
负无穷大 |
NegativeSign |
- |
NumberDecimalDigits |
2 |
NumberDecimalSeparator |
. |
NumberGroupSeparator |
, |
CurrencyPositivePattern |
0 |
PositiveInfinitySymbol |
正无穷大 |
PositiveSign |
+ |
PercentDecimalDigits |
2 |
PercentDecimalSeparator |
. |
PercentGroupSeparator |
, |
PercentSymbol |
% |
PerMilleSymbol |
‰ |
NativeDigits |
0,1,2,3,4,5,6,7,8,9 |
DigitSubstitution |
1 |
numberFormat示例:¥99.98
StringBuilder.aspx
<%
@ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="StringBuilder.aspx.cs"
Inherits="ClientScripting_Sys_StringBuilder" Title="StringBuilder"
%>
<
asp:Content
ID
="Content1"
ContentPlaceHolderID
="ContentPlaceHolder1"
runat
="Server"
>
<
textarea
id
="TraceConsole"
style
="width: 500px; height: 300px;"
></
textarea
>
<
script
type
="text/javascript"
>
function buildString(title)
{
// 创建一个StringBuilder对象
var sb = new Sys.StringBuilder("aaa");
// toString() - 将StringBuilder对象的内容转换为字符串
Sys.Debug.trace("StringBuilder:" + sb.toString());
// 添加指定字符串到StringBuilder对象的结尾
sb.append("bbb");
Sys.Debug.trace("StringBuilder:" + sb);
// 添加指定字符串到StringBuilder对象的结尾并添加一个换行符
sb.appendLine("ccc");
Sys.Debug.trace("StringBuilder:" + sb);
// 添加一个换行符到StringBuilder对象的结尾
sb.appendLine();
// toString(separator) - 在StringBuilder对象内的每一个元素的结尾处添加指定字符串
// 然后将StringBuilder对象的内容转换为字符串
Sys.Debug.trace("StringBuilder:" + sb.toString('xxx'));
// 清除StringBuilder对象所有内容
sb.clear();
Sys.Debug.trace("StringBuilder:" + sb);
// StringBuilder对象的内容是否为空
var bln = sb.isEmpty();
Sys.Debug.trace("StringBuilder:" + bln);
}
function pageLoad()
{
buildString();
}
</
script
>
</
asp:Content
>
运行结果
StringBuilder:aaa
StringBuilder:aaabbb
StringBuilder:aaabbbccc
StringBuilder:aaaxxxbbbxxxccc
xxx
StringBuilder:
StringBuilder:true
OK
[源码下载]