cobra - 2008-4-26 11:43:00
二:体验
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(1)首先写一个数组:
Code
var myList = [
{FirstName:"Chris",LastName:"Pearson"},
{FirstName:"Kate",LastName:"Johnson"},
{FirstName:"Josh",LastName:"Sutherland"},
{FirstName:"John",LastName:"Ronald"},
{FirstName:"Steve",LastName:"Pinkerton"}
];
(2)添加查询。
Code
var exampleArray = From(myList).
Where("item.FirstName == 'Chris'").
OrderBy("item.FirstName").
Select("item.FirstName");
结果是：
Chris
其实上面有的那些操作符的使用,你在下载官方的文件时里面就有很多事例,就能让能掌握拉.
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我就把筛选数据序列化为JSON穿回服务端.(我一直想做纯JS的网站!)
接着你再添加两个方法：
Code
jsonObjcet=function()
{
this.value = '0';
this.text = '';
}
Show = function()
{
var json = new jsonObjcet();
json.value='0';
json.text =exampleArray[0];
var jsonString = Sys.Serialization.JavaScriptSerializer.serialize(json);
var currsArea=document.getElementById("Text1");
var currsText = document.getElementById("lbl_JsonString");
currsText.value = jsonString;
for(var i=0;i<exampleArray.length;i++)
{
var group = document.createElement("li");
group.innerHTML = exampleArray;
currsArea.appendChild(group);
}
}
服务端：
Code
public class JsonObject
{
public string value = "0";
public string text = String.Empty;
}
protected void ServerButton2_Click(object sender, EventArgs e)
{
System.Web.Script.Serialization.JavaScriptSerializer mySerializer = new System.Web.Script.Serialization.JavaScriptSerializer();
JsonObject json = mySerializer.Deserialize<JsonObject>(this.lbl_JsonString.Text);
this.Label2.Text = json.text.ToString();
}
页面
Code
<div id="quickSummary">
<p class="p1" id="Text1"> </p>
<input id="CilentButton1" type="button" value="CilentButton" onclick="javaScript:Show();" />
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<aspx:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Label ID="Label2" runat="server" Text="Label"></asp:Label><br/>
<asp:Label ID="Label3" runat="server" Text="JSON"></asp:Label><asp:TextBox ID="lbl_JsonString" runat="server"></asp:TextBox>
<asp:Button ID="ServerButton2"
runat="server" Text="ServerButton"
onclick="ServerButton2_Click" />
</ContentTemplate>
<Triggers>
<aspx:AsyncPostBackTrigger ControlID="ServerButton2" EventName="Click" />
</Triggers>
</aspx:UpdatePanel>
</div>
<div id="ShowSource1">
</div>
其实比较简单,但我想要用LINQ to JavaScript,要这样才完整嘛.
--------------------------------------------------------------------------------
(1)首先写一个数组:
CodeCODE:
var myList = [
{FirstName:"Chris",LastName:"Pearson"},
{FirstName:"Kate",LastName:"Johnson"},
{FirstName:"Josh",LastName:"Sutherland"},
{FirstName:"John",LastName:"Ronald"},
{FirstName:"Steve",LastName:"Pinkerton"}
];
(2)添加查询。
CodeCODE:
var exampleArray = From(myList).
Where("item.FirstName == 'Chris'").
OrderBy("item.FirstName").
Select("item.FirstName");
结果是：
Chris
其实上面有的那些操作符的使用,你在下载官方的文件时里面就有很多事例,就能让能掌握拉.
--------------------------------------------------------------------------------
我就把筛选数据序列化为JSON穿回服务端.(我一直想做纯JS的网站!)
接着你再添加两个方法：
CodeCODE:
jsonObjcet=function()
{
this.value = '0';
this.text = '';
}
Show = function()
{
var json = new jsonObjcet();
json.value='0';
json.text =exampleArray[0];
var jsonString = Sys.Serialization.JavaScriptSerializer.serialize(json);
var currsArea=document.getElementById("Text1");
var currsText = document.getElementById("lbl_JsonString");
currsText.value = jsonString;
for(var i=0;i<exampleArray.length;i++)
{
var group = document.createElement("li");
group.innerHTML = exampleArray;
currsArea.appendChild(group);
}
}
服务端：
CodeCODE:
public class JsonObject
{
public string value = "0";
public string text = String.Empty;
}
protected void ServerButton2_Click(object sender, EventArgs e)
{
System.Web.Script.Serialization.JavaScriptSerializer mySerializer = new System.Web.Script.Serialization.JavaScriptSerializer();
JsonObject json = mySerializer.Deserialize<JsonObject>(this.lbl_JsonString.Text);
this.Label2.Text = json.text.ToString();
}
页面
CodeCODE:
<div id="quickSummary">
<p class="p1" id="Text1"> </p>
<input id="CilentButton1" type="button" value="CilentButton" onclick="javaScript:Show();" />
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<aspx:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Label ID="Label2" runat="server" Text="Label"></asp:Label><br/>
<asp:Label ID="Label3" runat="server" Text="JSON"></asp:Label><asp:TextBox ID="lbl_JsonString" runat="server"></asp:TextBox>
<asp:Button ID="ServerButton2"
runat="server" Text="ServerButton"
onclick="ServerButton2_Click" />
</ContentTemplate>
<Triggers>
<aspx:AsyncPostBackTrigger ControlID="ServerButton2" EventName="Click" />
</Triggers>
</aspx:UpdatePanel>
</div>
<div id="ShowSource1">
</div>
其实比较简单,但我想要用LINQ to JavaScript,要这样才完整嘛.