jQuery javascript asp .net mvc razor 中的访问模型
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access model in javascript asp .net mvc razor
提问by SARAVAN
I am working on asp .net mvc project with razor.
我正在使用 razor 开发 asp .net mvc 项目。
I am trying to access my model in javascript as follows
我正在尝试在 javascript 中访问我的模型，如下所示
alert(Model.SecurityProfile); alert(model.SecurityProfile); alert(@Model.SecurityProfile); alert(@model.SecurityProfile);var SecurityProfileViewModel = { ViewModel: model, Id: SecurityProfileId, ProfileId: $('#ProfileId').val(), JobTitleId: $('#JobTitle').val(), SecurityProfileTypeId: $('#SecurityProfileType').val(), Status: $('#ddlStatus').val(), Reason: $('#txtReason').val(), Mode: $('#hidMode').val() };
$.ajax({ url: '/SecurityProfile/Edit', type: 'POST', contentType: 'application/json; charset=utf-8', dataType: 'json', data: JSON.stringify(SecurityProfileViewModel), success: function (data) { alert(data); window.location.href = '/SecurityProfile/Index'; } });
But nothing works. I am getting model is undefined error
但没有任何作用。我收到模型未定义错误
回答by David
modelis undefined, as far as JavaScript is concerned. The server-side code in your view executes, well, server-side. JavaScript has no notion of that. It's only concerned with the client-side output of that code. You can kind ofmix the two, but need to keep in mind that the server-side components are just there to emit strings which will be part of the client-side output.
model就 JavaScript 而言，是未定义的。您视图中的服务器端代码在服务器端执行。JavaScript 没有这个概念。它只关心该代码的客户端输出。你可以种混合使用这两种，但需要记住的是，服务器端组件就在那里发出的字符串，这将是客户端输出的一部分。
So, for example, if you have a property on your model called:
因此，例如，如果您的模型上有一个名为：
Model.SomeProperty
Then you can't use it directly in JavaScript like this:
那么你不能像这样直接在 JavaScript 中使用它：
alert(Model.SomeProperty)
// or
alert(SomeProperty)
That's not using the razor view syntax to tell the view engine that there's server-side code here. This is syntactically client-side code, and there is no Modelclient-side. So you need to indicate that there's server-side pre-processing to do:
这不是使用 razor 视图语法来告诉视图引擎这里有服务器端代码。这是语法上的客户端代码，没有Model客户端。所以你需要指出有服务器端预处理要做：
alert(@Model.SomeProperty)
Additionally, if SomePropertyis a string, then keep in mind that it's outputisn't going to include quotes. So you'd need to provide those for client-side code as well:
此外，如果SomeProperty是字符串，请记住它的输出不会包含引号。因此，您还需要为客户端代码提供这些：
alert('@Model.SomeProperty')
Thus, the server-side value of SomePropertywill be emitted here when it's rendered to the client. So if the value is something like "Hello World"then the resulting client-side code would be:
因此，SomeProperty当它呈现给客户端时，将在此处发出服务器端值。因此，如果该值类似于，"Hello World"那么生成的客户端代码将是：
alert('Hello World')
The main thing is to keep in mind the separation between the server-side code and the client-side code. All JavaScript/HTML/CSS is just one big string as far as server-side code is concerned. The view is essentially just creating a big string to send to the browser. Once it's in the browser, the client-side rendering knows the difference between JavaScript/HTML/CSS and executes accordingly, long after the server-side code is gone.
主要是要记住服务器端代码和客户端代码之间的分离。就服务器端代码而言，所有 JavaScript/HTML/CSS 都只是一个大字符串。视图本质上只是创建一个大字符串发送到浏览器。一旦它在浏览器中，客户端渲染就会知道 JavaScript/HTML/CSS 之间的区别，并在服务器端代码消失很久之后相应地执行。
