Rendering Forms Scripts

Forms output some JavaScript which is by default rendered right below the markup.

In many cases, you might prefer rendering your scripts at the bottom of the page. For example, before the closing </body> tag. This generally improves site performance.

In order to render your scripts where you want, you need to add a snippet to your template. Make sure you add it below your scripts, right before the closing </body> tag.

By default, Forms uses TempData for tracking the forms rendered on a page. The stored values are used when rendering the form scripts and associated data.

The following snippet should be used.

@using Umbraco.Forms.Web.Extensions;

@if (TempData.Get<Guid[]>("UmbracoForms") is Guid[] formIds)
{
    foreach (var formId in formIds)
    {
        @await Component.InvokeAsync("RenderFormScripts", new { formId, theme = "default" })
    }

    TempData.Remove("UmbracoForms");
}

If you have changed the configuration value TrackRenderedFormsStorageMethod to use HttpContext.Items, the snippet is:

@if (Context.Items.TryGetValue("UmbracoForms", out object? formIdsObject) && formIdsObject is IEnumerable<Guid> formIds)
{
    foreach (var formId in formIds)
    {
        @await Component.InvokeAsync("RenderFormScripts", new { formId, theme = "default" })
    }
}

Read more about this configuration option in the configuration article.

If you prefer to use a tag helper, that's an option too.

Firstly, in your _ViewImports.cshtml file, ensure you have a reference to the Umbraco Forms tag helpers with:

@addTagHelper *, Umbraco.Forms.Web

Then instead of reading from TempData and invoking the view component directly, you can use:

<umb-forms-render-scripts theme="default" />

This will use the appropriate storage method that you have configured.

Enabling ExcludeScripts

If you do not want to render the associated scripts with a Form, you need to explicitly say so. You need to make sure ExcludeScripts is checked/enabled, whether you are inserting your Form using a macro or adding it directly in your template.

To enable ExcludeScripts:

• Using the Insert Form with Theme macro:

  

  Exclude scripts
• While inserting Forms directly in your template:

  @await Umbraco.RenderMacroAsync("renderUmbracoForm", new {FormGuid="6c3f053c-1774-43fa-ad95-710a01d9cd12", FormTheme="bootstrap3-horizontal", ExcludeScripts="1"})

ExcludeScripts = "1" prevents the associated scripts from being rendered. Any other value, an empty value, or if the parameter is excluded, will render the scripts on the Form.