无法从静态方法运行Javascript

Question

我想从静态方法运行一个简单的警报脚本（与未来的运行功能的意图），但它不显示我的警报（如果我在页面加载事件它工作正常）：

Page page = HttpContext.Current.CurrentHandler as Page; 

    if (page != null) 
    { 
     string myScript = "<script type=\"text/javascript\" language=\"Javascript\">"; 
     myScript += "alert('hi');"; 
     myScript += "</script>"; 
     page.ClientScript.RegisterClientScriptBlock(page.GetType(), "alert", myScript); 
    } 

如果我调试ClientScript确实运行，请问有人可以帮忙吗？

编辑

这是一个示例脚本，我想success event of ajax webmethod后运行：

<script type="text/javascript"> 
    var OrderReference = '<%= Id %>'; 
    var EID = <%= EId %>; 
    var Comment = ''; 
    var SubDomain = 'track'; 

    if (location.protocol.toLowerCase() == 'https:') 
     wgProtocol = 'https'; 
    else 
     wgProtocol = 'http'; 

    Uri = wgProtocol + '://' + SubDomain + '.test.com/tr.html' + '?&eid=' + EID 
     + '&orderreference=' + OrderReference ; 

    document.write('<sc' + 'ript language="JavaScript" type="text/javascript" src="' + Uri + '"></sc' + 'ript>'); 
</script> 

<noscript> 
    <img src='http://test.com/transaction.html?ver=1&eventid=<%= EId %>&wgorderreference=<%= Id %>&' alt='' /> 
</noscript> 

已经试图返回上面的脚本为字符串，并以AJAX方法尝试以下，但得到400 bad request在Firebug中：

var script = document.createElement('script'); 
script.type = 'text/javascript'; 
script.src = result; 
document.body.appendChild(script); 

E DIT 2：

我创建了这个类：

[Serializable] 
    public class PixelGenericResults 
    { 
     public int Id{ get; set; } 
     public string Script { get; set; } 
    } 

在我的静态方法我做的：

var g = new GenericResults(); 
g.Id = 2; 
g.Script = AffiliateTracking.getScript(g.Id); //This gets me the above script 

HttpContext.Current.Response.ContentType = "application/json"; 
strReturn = new JavaScriptSerializer().Serialize(g); 

，并在成功aspx页面我所做的：

success: function (result) { 
         if (result.hasOwnProperty("d")) { result = result.d; } 
    var script = document.createElement('script'); 
    script.type = 'text/javascript'; 
    script.src = result.Script; 
    document.getElementsByTagName('body')[0].appendChild(script); 
} 

但运行它时，我得到这个错误在萤火虫"NetworkError: 404 Not Found - http://localhost:5822/undefined"

Answer 1

正如评论中所述，您不能直接与使用AJAX调用呈现的页面进行交互，因此您必须在客户端执行一些工作。

这里一个例子，根据你的代码向我们展示：

C＃：

//import this namespace: 
using System.Web.Script.Serialization; 

// declare a class to contain all the info you will need client-side 
[Serializable] 
public class GenericResult 
{ 
    public int OrderReference { get; set; } 
    public string URL {get; set;} 
    public string EID { get; set; } 
    public string Comment { get; set; } 
    // etc. etc. 
} 

//In your static method, instance and populate such class: 
var r = new GenericResult(); 
r.OrderReference = 34; 
r.URL = "http://www.google.com"; 
r.EID = "someString"; 
r.Comment = "this will work like a charm"; 
this.Response.ContentType = "application/json"; 
this.Response.Write(new JavaScriptSerializer().Serialize(r)); 

JS：

//In your AJAX 'onsuccess' callback, you can use the object very easily, eg: 
function callback(r){ 
    var script = document.createElement('script'); 
    script.type = 'text/javascript'; 
    script.src = r.URL; 
    document.getElementsByTagName('body')[0].appendChild(script); 
} 

我没有测试过这一点，所以它可能包含任何错别字，但这应该足以让您调整代码。

编辑：

success: function (result) { 
    //what is the next line for?!?!?! 
    //if (result.hasOwnProperty("d")) { result = result.d; } 

    var script = document.createElement('script'); 
    script.type = 'text/javascript'; 
    script.src = result.Script; 
    document.getElementsByTagName('body')[0].appendChild(script); 
}