Using JavaScript within Razor C#

I am attempting to invoke a JavaScript function from within a helper method in Razor. Here is a snippet of my code:

@helper MyMethod() 
{
     for (int i = 0; i < 5; i++)
     {
          drawMe(i)
     }
}

The drawMe function is defined in an external js file that has been correctly included. I have experimented with enclosing it in script tags and using Html.Raw, but so far nothing has proven successful. Any assistance would be greatly appreciated.

Thank you

Answer №1

If you are trying to run JavaScript code like this, make sure to enclose it within a script tag. In this scenario, the helper function generates a script tag on the page containing a for loop in JavaScript. However, if it's not working as expected, the issue might lie elsewhere. When scripts are output in this manner, the browser instantly executes them upon detection in the DOM. But there is a possibility that your external file hasn't finished loading yet.

@helper MyMethod() 
{
    <script type="text/javascript">

         for (var i = 0; i < 5; i++)
         {
              drawMe(i);
         }

     </script>
}

To ensure everything works smoothly, you may consider deferring the execution of your JavaScript until all scripts have fully loaded on the page:

@helper MyMethod() 
{
    <script type="text/javascript">

        window.onload = function()
        {
            for (var i = 0; i < 5; i++)
            {
                 drawMe(i);
            }
        }


     </script>
}

Answer №2

@utility CustomFunction() 
{
     for (int j = 0; j < 5; j++)
     {
          <word><script type="text/javascript">displayElement(@j)</script></word>
     }
}

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