Justin Cooney

Web Development Tips and Examples

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about

I am a Senior Applications Programmer / Analyst with years of experience developing enterprise solutions using the Microsoft technology stack including C#, VB.NET, ASP.NET, AJAX, IIS and SQL Server. I specialize in Web application development with a focus on building secure systems, integrating applications, and designing robust database structures.

Category: JavaScript

  • Simple JavaScript to Stop Forms Being Submitted Twice

    To prevent forms from being submitted more than once I sometimes like to add a simple JavaScript function to the Submit button that disables the button when it is clicked. This does not provide a complete guarantee that the data is not sent twice, but it is effective at reducing the risk of multiple submissions.…

  • Using the ASP.NET CustomValidator Control with Custom JavaScript to Prevent Multiple Form Submissions

    Today I was working on a maintenance Web page that triggers a SQL Server stored procedure. This stored procedure can either run quite quickly, or it can take in excess of seven minutes to finish. So in order to let the user know that the process is executing in the background I added a small…

  • Enabling / Disabling Form Elements Using JavaScript

    I sometimes find the need to dynamically enable or disable form elements especially since I often use ASP.NET webforms. For this purpose I find that the default HTML attributes are not sufficient. Specifically, the HTML DISABLED and READONLY element attributes do not work as one would want a disabled form field to actually work. In…