How to call javascript function in a JS file to a controller using ASP.Net MVC?

Question

I'm having a problem trying to call a javascript function in a JS file to a controller. I wanted to use the function in the JS file then return the value to a controller who calls that function.

Here is my code: (JS File)

function getQueryString(url) {
    var arrSplit = url.split('?');
    return arrSplit.length > 1 ? url.substring(url.indexOf('?')+1) : '';
}

And I wanted to make a call like this in my controller. (Controller)

private string DoSomething(){
     getQueryString("http://sample.com");
}

Is is this possible? Or if ever do you have any suggestions or any possible workarounds?

The question is not really clear. What you are exactly trying to achieve, Also, 3 lines of code does not do justice to the problem explanation. — Shahzad
– Shahzad, Commented Jul 3, 2019 at 6:47

Shahzad · Accepted Answer · 2019-07-03 07:03:39Z

1

First of all, MVC does not work that way. You cannot refer JS methods from your MVC controller. MVC controlled executes on the backend and just formulates your View. Once your HTML view is returned to the client, it executes there, And you JS is on the client-side. If you need to call a method in your JS on the browser side, from a server-side Controller, you need to use SignalR.

answered Jul 3, 2019 at 7:03

Shahzad

1,7131 gold badge13 silver badges26 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

ikey Over a year ago

Thank you for your answer. May I know if there is an easier way to convert the javascript function to a controller function? Because I've tried converting it manually but I have a hard time doing it that is why I asked if this is possible.

Shahzad Over a year ago

I am not sure what you are exactly asking, but why can't you write the code on the backend side itself if you need to access that from the controller? If you need the URL, you can get that from the Request inside the controller action too.

Collectives™ on Stack Overflow

How to call javascript function in a JS file to a controller using ASP.Net MVC?

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related