8

I need one Action return a JavaScript fragment.

In MVC 5 we have:

return JavaScript("alert('hello')");

but in MVC 6 we don´t.

Is there a way to do this now ?

Yuval Itzchakov
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Beetlejuice
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3 Answers3

9

This can be achieved by returning ContentResult MSDN 

return Content("<script language='javascript' type='text/javascript'>alert('Hello world!');</script>");

or other way would be making use of ajax

return json(new {message="hello"});  

 $.ajax({
        url: URL,
        type: "POST",
        success: function(data){alert(data.message)},    
    });
Travis J
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warrior
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    Can you please include an explanation with this as well. Code only answers are typically frowned upon because they lack reasoning. Perhaps include a link to MSDN or something that references Content? – Travis J Sep 18 '15 at 19:05
  • The first option does not work with mvc 6. Nothing happens, at all. – Beetlejuice Sep 18 '15 at 19:31
  • Can you add more to your code rather than a simple return statment, client side, controller code. I would prefer second option though. – warrior Sep 18 '15 at 19:37
  • Actually I need to render a partial view and present it in a bootbox control. – Beetlejuice Sep 18 '15 at 19:48
  • where do I put the ajax code. I don't have a view. I just want to display alert. – Ashenafi Semu Mar 21 '17 at 08:51
4

I think we can implment JavaScriptResult ourselves since it is not supported officially. It is easy:

public class JavaScriptResult : ContentResult
{
    public JavaScriptResult(string script)
    {
        this.Content = script;
        this.ContentType = "application/javascript";
    }
}
Maxim
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0

Currently ASP.NET MVC 6 doesn't support JavaScriptResult like in MVC 5. An interesting discussion for this can be found here (there's some solutions for your problem too): https://github.com/aspnet/Mvc/issues/2953

Personally I think that sending JS code to the client is a bad thing (send the client the data that the JS needs and then perform the functions invocations there) but it seems that there's a valid situation for this (look at the last comment).

Vladislav Karamfilov
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  • This will be a challenge for my actual project. But I will give a try. – Beetlejuice Sep 18 '15 at 19:31
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    Sending??? No! It should be used for sharing of dynamically create JS using site endpoint. For example for dynamically created constants. – Maxim Jul 19 '16 at 05:44