Pass parameter to Javascript function from ASP code behind

Question

I have a long process and I want to show a user a progress bar where I pass a parameter (percentage) to a Javascript function in my Webform with masterpage.

I have this:

Answer 1

Try this way

    string updateProgress = "18%";
    ClientScript.RegisterStartupScript(this.GetType(), "updateProgress", "updateProgress('" + updateProgress + "');", true);

Script AS

   <script type="text/javascript">
    function updateProgress(percentage) {
        document.getElementById("ProgressBar").style.width = percentage;
    }
  </script>

ASPX page

   <div class="progress progress-striped active progress-success" style="height: 43px">
        <div id="ProgressBar" runat="server" class="progress-bar" role="progressbar" aria-valuemin="0" aria-valuemax="100"
            style="width: 0px;" >
        </div>
    </div>