I'm working with the ASP.NET Core 2.2 project where I need to return JavaScript from the controller. However, I suspect that there is no direct way, hence, I followed this OS answer and changed my code as following:
public IActionResult MyAction()
{
var sb = new StringBuilder();
sb.Append("$(document).ready(function(){");
sb.Append("alert('hi')");
sb.Append("});");
return new JavaScriptResult(sb.ToString());
}
public class JavaScriptResult : ContentResult
{
public JavaScriptResult(string script)
{
this.Content = script;
this.ContentType = "application/javascript";
}
}
Though it's just writing plain text instead. Is there way around?
I'm working with the ASP.NET Core 2.2 project where I need to return JavaScript from the controller. However, I suspect that there is no direct way, hence, I followed this OS answer and changed my code as following:
public IActionResult MyAction()
{
var sb = new StringBuilder();
sb.Append("$(document).ready(function(){");
sb.Append("alert('hi')");
sb.Append("});");
return new JavaScriptResult(sb.ToString());
}
public class JavaScriptResult : ContentResult
{
public JavaScriptResult(string script)
{
this.Content = script;
this.ContentType = "application/javascript";
}
}
Though it's just writing plain text instead. Is there way around?
Share Improve this question edited Aug 14, 2019 at 8:29 Nan Yu 27.6k9 gold badges75 silver badges154 bronze badges asked Aug 14, 2019 at 7:15 Divyang DesaiDivyang Desai 7,86414 gold badges55 silver badges81 bronze badges 4-
1
When you say it's "just writing plain text instead", is it to be understood that it's sending
Content-Typeastext/plain? – ProgrammingLlama Commented Aug 14, 2019 at 7:24 - Yeah, that's correct! @John – Divyang Desai Commented Aug 14, 2019 at 7:30
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Based on your implementation, i can assume that you want the script to be executed when the controller method is called. If i'm right then it would make more sense if you pass the script via a ViewData obect and reference from your view page like: Controller:
ViewData["sayhello"] = "alert('hello');"then from View: head tag<script>@Html.Raw(ViewData["sayhello"].ToString())</script>– Giddy Naya Commented Aug 14, 2019 at 8:33 - Yes, that is an alternative way and currently implemented the same. However, we won't have view page anymore – Divyang Desai Commented Aug 14, 2019 at 8:36
2 Answers
Reset to default 11You can use ajax to load the javascript , in your page :
<script>
$(function () {
$.getScript("/Controller/Action");
});
</script>
Your serve side :
public IActionResult DoSomething()
{
return new JavaScriptResult("alert('Hello world!');");
}
public class JavaScriptResult : ContentResult
{
public JavaScriptResult(string script)
{
this.Content = script;
this.ContentType = "application/javascript";
}
}
You need to add a second parameter Content-type and return "Content" instead of JavaScriptResult:
`public IActionResult MyAction()
{
var sb = new StringBuilder();
sb.Append("$(document).ready(function(){");
sb.Append("alert('hi')");
sb.Append("});");
return Content(sb.ToString(), "text/html");
}`