@RenderSection("Scripts", false)

@section Scripts {
    @*Stuff comes here*@
}

@section Scripts {

   
        //code comes here
   
}


    poo bar poo



  @Html.Partial("_myPartial")

@RenderSection("body_scripts", false)

@Html.Partial("Clients")
@section body_scripts
{
    @Html.Partial("Clients_Scripts")
}

@section body_scripts
{
    @Html.Partial("Clients_Scripts")
}

@Html.RenderDelayed(); // writes unnamed sections (#1 and #2, excluding #3)
@Html.RenderDelayed("when-i-call-you", false); // writes the specified block, and ignore the `isOnlyOne` setting so we can dump it again
@Html.RenderDelayed("when-i-call-you"); // render the specified block by name
@Html.RenderDelayed("when-i-call-you"); // since it was"popped" in the last call, won't render anything due to `isOnlyOne` provided in `Html.Delayed`

public static class HtmlRenderExtensions {

    /// <summary>
    /// Delegate script/resource/etc injection until the end of the page
    /// <para>@via https://stackoverflow.com/a/14127332/1037948 and http://jadnb.wordpress.com/2011/02/16/rendering-scripts-from-partial-views-at-the-end-in-mvc/ </para>
    /// </summary>
    private class DelayedInjectionBlock : IDisposable {
        /// <summary>
        /// Unique internal storage key
        /// </summary>
        private const string CACHE_KEY ="DCCF8C78-2E36-4567-B0CF-FE052ACCE309"; //"DelayedInjectionBlocks";

        /// <summary>
        /// Internal storage identifier for remembering unique/isOnlyOne items
        /// </summary>
        private const string UNIQUE_IDENTIFIER_KEY = CACHE_KEY;

        /// <summary>
        /// What to use as internal storage identifier if no identifier provided (since we can't use null as key)
        /// </summary>
        private const string EMPTY_IDENTIFIER ="";

        /// <summary>
        /// Retrieve a context-aware list of cached output delegates from the given helper; uses the helper's context rather than singleton HttpContext.Current.Items
        /// </summary>
        /// <param name="helper">the helper from which we use the context</param>
        /// <param name="identifier">optional unique sub-identifier for a given injection block</param>
        /// <returns>list of delayed-execution callbacks to render internal content</returns>
        public static Queue<string> GetQueue(HtmlHelper helper, string identifier = null) {
            return _GetOrSet(helper, new Queue<string>(), identifier ?? EMPTY_IDENTIFIER);
        }

        /// <summary>
        /// Retrieve a context-aware list of cached output delegates from the given helper; uses the helper's context rather than singleton HttpContext.Current.Items
        /// </summary>
        /// <param name="helper">the helper from which we use the context</param>
        /// <param name="defaultValue">the default value to return if the cached item isn't found or isn't the expected type; can also be used to set with an arbitrary value</param>
        /// <param name="identifier">optional unique sub-identifier for a given injection block</param>
        /// <returns>list of delayed-execution callbacks to render internal content</returns>
        private static T _GetOrSet<T>(HtmlHelper helper, T defaultValue, string identifier = EMPTY_IDENTIFIER) where T : class {
            var storage = GetStorage(helper);

            // return the stored item, or set it if it does not exist
            return (T) (storage.ContainsKey(identifier) ? storage[identifier] : (storage[identifier] = defaultValue));
        }

        /// <summary>
        /// Get the storage, but if it doesn't exist or isn't the expected type, then create a new"bucket"
        /// </summary>
        /// <param name="helper"></param>
        /// <returns></returns>
        public static Dictionary<string, object> GetStorage(HtmlHelper helper) {
            var storage = helper.ViewContext.HttpContext.Items[CACHE_KEY] as Dictionary<string, object>;
            if (storage == null) helper.ViewContext.HttpContext.Items[CACHE_KEY] = (storage = new Dictionary<string, object>());
            return storage;
        }


        private readonly HtmlHelper helper;
        private readonly string identifier;
        private readonly string isOnlyOne;

        /// <summary>
        /// Create a new using block from the given helper (used for trapping appropriate context)
        /// </summary>
        /// <param name="helper">the helper from which we use the context</param>
        /// <param name="identifier">optional unique identifier to specify one or many injection blocks</param>
        /// <param name="isOnlyOne">extra identifier used to ensure that this item is only added once; if provided, content should only appear once in the page (i.e. only the first block called for this identifier is used)</param>
        public DelayedInjectionBlock(HtmlHelper helper, string identifier = null, string isOnlyOne = null) {
            this.helper = helper;

            // start a new writing context
            ((WebViewPage)this.helper.ViewDataContainer).OutputStack.Push(new StringWriter());

            this.identifier = identifier ?? EMPTY_IDENTIFIER;
            this.isOnlyOne = isOnlyOne;
        }

        /// <summary>
        /// Append the internal content to the context's cached list of output delegates
        /// </summary>
        public void Dispose() {
            // render the internal content of the injection block helper
            // make sure to pop from the stack rather than just render from the Writer
            // so it will remove it from regular rendering
            var content = ((WebViewPage)this.helper.ViewDataContainer).OutputStack;
            var renderedContent = content.Count == 0 ? string.Empty : content.Pop().ToString();
            // if we only want one, remove the existing
            var queue = GetQueue(this.helper, this.identifier);

            // get the index of the existing item from the alternate storage
            var existingIdentifiers = _GetOrSet(this.helper, new Dictionary<string, int>(), UNIQUE_IDENTIFIER_KEY);

            // only save the result if this isn't meant to be unique, or
            // if it's supposed to be unique and we haven't encountered this identifier before
            if( null == this.isOnlyOne || !existingIdentifiers.ContainsKey(this.isOnlyOne) ) {
                // remove the new writing context we created for this block
                // and save the output to the queue for later
                queue.Enqueue(renderedContent);

                // only remember this if supposed to
                if(null != this.isOnlyOne) existingIdentifiers[this.isOnlyOne] = queue.Count; // save the index, so we could remove it directly (if we want to use the last instance of the block rather than the first)
            }
        }
    }


    /// <summary>
    /// <para>Start a delayed-execution block of output -- this will be rendered/printed on the next call to <see cref="RenderDelayed"/>.</para>
    /// <para>
    /// <example>
    /// Print once in"default block" (usually rendered at end via <wyn>@Html.RenderDelayed()</wyn>).  Code:
    /// <wyn>
    /// @using (Html.Delayed()) {
    ///     show at later
    ///     <span>@Model.Name</span>
    ///     etc
    /// }
    /// </wyn>
    /// </example>
    /// </para>
    /// <para>
    /// <example>
    /// Print once (i.e. if within a looped partial), using identified block via <wyn>@Html.RenderDelayed("one-time")</wyn>.  Code:
    /// <wyn>
    /// @using (Html.Delayed("one-time", isOnlyOne:"one-time")) {
    ///     show me once
    ///     <span>@Model.First().Value</span>
    /// }
    /// </wyn>
    /// </example>
    /// </para>
    /// </summary>
    /// <param name="helper">the helper from which we use the context</param>
    /// <param name="injectionBlockId">optional unique identifier to specify one or many injection blocks</param>
    /// <param name="isOnlyOne">extra identifier used to ensure that this item is only added once; if provided, content should only appear once in the page (i.e. only the first block called for this identifier is used)</param>
    /// <returns>using block to wrap delayed output</returns>
    public static IDisposable Delayed(this HtmlHelper helper, string injectionBlockId = null, string isOnlyOne = null) {
        return new DelayedInjectionBlock(helper, injectionBlockId, isOnlyOne);
    }

    /// <summary>
    /// Render all queued output blocks injected via <see cref="Delayed"/>.
    /// <para>
    /// <example>
    /// Print all delayed blocks using default identifier (i.e. not provided)
    /// <wyn>
    /// @using (Html.Delayed()) {
    ///     show me later
    ///     <span>@Model.Name</span>
    ///     etc
    /// }
    /// </wyn>
    /// -- then later --
    /// <wyn>
    /// @using (Html.Delayed()) {
    ///     more for later
    ///     etc
    /// }
    /// </wyn>
    /// -- then later --
    /// <wyn>
    /// @Html.RenderDelayed() // will print both delayed blocks
    /// </wyn>
    /// </example>
    /// </para>
    /// <para>
    /// <example>
    /// Allow multiple repetitions of rendered blocks, using same <wyn>@Html.Delayed()...</wyn> as before.  Code:
    /// <wyn>
    /// @Html.RenderDelayed(removeAfterRendering: false); /* will print */
    /// @Html.RenderDelayed() /* will print again because not removed before */
    /// </wyn>
    /// </example>
    /// </para>

    /// </summary>
    /// <param name="helper">the helper from which we use the context</param>
    /// <param name="injectionBlockId">optional unique identifier to specify one or many injection blocks</param>
    /// <param name="removeAfterRendering">only render this once</param>
    /// <returns>rendered output content</returns>
    public static MvcHtmlString RenderDelayed(this HtmlHelper helper, string injectionBlockId = null, bool removeAfterRendering = true) {
        var stack = DelayedInjectionBlock.GetQueue(helper, injectionBlockId);

        if( removeAfterRendering ) {
            var sb = new StringBuilder(
#if DEBUG
                string.Format("<!-- delayed-block: {0} -->", injectionBlockId)
#endif
                );
            // .count faster than .any
            while (stack.Count > 0) {
                sb.AppendLine(stack.Dequeue());
            }
            return MvcHtmlString.Create(sb.ToString());
        }

        return MvcHtmlString.Create(
#if DEBUG
                string.Format("<!-- delayed-block: {0} -->", injectionBlockId) +
#endif
            string.Join(Environment.NewLine, stack));
    }


}

<script type="text/javascript">        
    function scriptToExecute()
    {
        //The script you want to execute when page is ready.          
    }

    function runWhenReady()
    {
        if (window.$)
            scriptToExecute();                                  
        else
            setTimeout(runWhenReady, 100);
    }
    runWhenReady();

namespace System.Web.Mvc.Html
{
    public static class PartialWithScript
    {
        public static void RenderPartialWithScript(this HtmlHelper htmlHelper, string partialViewName)
        {
            if (htmlHelper.ViewBag.ScriptPartials == null)
            {
                htmlHelper.ViewBag.ScriptPartials = new List<string>();
            }

            if (!htmlHelper.ViewBag.ScriptPartials.Contains(partialViewName))
            {
                htmlHelper.ViewBag.ScriptPartials.Add(partialViewName);
            }

            htmlHelper.ViewBag.ScriptPartialHtml = true;
            htmlHelper.RenderPartial(partialViewName);
        }

        public static void RenderPartialScripts(this HtmlHelper htmlHelper)
        {
            if (htmlHelper.ViewBag.ScriptPartials != null)
            {
                htmlHelper.ViewBag.ScriptPartialHtml = false;
                foreach (string partial in htmlHelper.ViewBag.ScriptPartials)
                {
                    htmlHelper.RenderPartial(partial);
                }
            }
        }
    }
}

@if (ViewBag.ScriptPartialHtml ?? true)
    <p>
I has htmls
</p>
}
else {
    <script type="text/javascript">
        alert('I has javascripts');
   
}

@{ Html.RenderPartialScripts(); }

@{Html.RenderPartialWithScript("~/Views/MyController/_MyPartial.cshtml");}

@model KeyValuePair<WebPageBase, HtmlHelper>
@{
    Model.Key.DefineSection("SectionNameGoesHere", () =>
    {
        Model.Value.ViewContext.Writer.Write("Test");
    });
}

@Html.Partial(new KeyValuePair<WebPageBase, HtmlHelper>(this, Html))

    @Html.Partial("_MyPartialView",< model for partial view>,
            new ViewDataDictionary { {"Region","HTMLSection" } } })


@section scripts{

    @Html.Partial("_MyPartialView",<model for partial view>,
                  new ViewDataDictionary { {"Region","ScriptSection" } })

 }

@model SomeType

@{
    var region = ViewData["Region"] as string;
}

@if (region =="HTMLSection")
{


}

@if (region =="ScriptSection")
{
        <script type="text/javascript">
    </script">
}

<script type="text/javascript">    
var time = setInterval(function () {
    if (window.jQuery != undefined) {
        window.clearInterval(time);

        //Begin
        $(document).ready(function () {
           //....
        });
        //End
    };
}, 10);

// global scripts
<script src="js/jquery.min.js">
// view scripts
@RenderSection("scripts", false)
// then finally trigger partial view scripts

  (function(){
    document.querySelector('body').dispatchEvent(new Event('scriptsLoaded'));
  })();

  (function(){
    document.querySelector('body').addEventListener('scriptsLoaded', function() {

      // .. do your thing here

    });
  })();

@if ((bool)ViewData["ShouldRenderScripts"] == true){
// Scripts
}else{
// Html
}

@Html.Partial("MyPartialView", Model,
    new ViewDataDictionary { {"ShouldRenderScripts", false } })

@section scripts{
    @Html.Partial("MyPartialView", Model,
        new ViewDataDictionary { {"ShouldRenderScripts", true } })
}

@section Scripts {

    $(document).ready(function () {
        ...
    });

}

...

@Html.Partial("_Charts", Model)

@{
    var partial = Html.Raw(Json.Encode(new { html = Html.Partial("_Charts", Model).ToString() }));
}

@section Scripts {

    $(document).ready(function () {
        ...
        var partial = @partial;
        $('#partial').html(partial.html);
    });

}

@RenderSection("scripts", required: false)

@section scripts{
     @Scripts.Render("~/Scripts/file.js")
}

    public abstract class CustomWebViewPage<TModel> : WebViewPage<TModel> {

    public IHtmlString PartialWithScripts(string partialViewName, object model) {
        return Html.Partial(partialViewName: partialViewName, model: model, viewData: new ViewDataDictionary { ["view"] = this, ["html"] = Html });
    }

    public void RenderScriptsInBasePage(HelperResult scripts) {
        var parentView = ViewBag.view as WebPageBase;
        var parentHtml = ViewBag.html as HtmlHelper;
        parentView.DefineSection("scripts", () => {
            parentHtml.ViewContext.Writer.Write(scripts.ToHtmlString());
        });
    }
}

<pages pageBaseType="Web.Helpers.CustomWebViewPage">

@PartialWithScripts("_BackendSearchForm")

@{ RenderScriptsInBasePage(scripts()); }

@helper scripts() {

    //code will be rendered in a"scripts" section of the Layout page

}

@RenderSection("scripts", required: false)

<scripts>
    <script type="text/javascript">
        //anything here
   
</scripts>

<scripts render="true"></scripts>

public class ScriptsTagHelper : TagHelper
    {
        private static readonly object ITEMSKEY = new Object();

        private IDictionary<object, object> _items => _httpContextAccessor?.HttpContext?.Items;

        private IHttpContextAccessor _httpContextAccessor;

        public ScriptsTagHelper(IHttpContextAccessor httpContextAccessor)
        {
            _httpContextAccessor = httpContextAccessor;
        }

        public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
        {
            var attribute = (TagHelperAttribute)null;
            context.AllAttributes.TryGetAttribute("render",out attribute);

            var render = false;

            if(attribute != null)
            {
                render = Convert.ToBoolean(attribute.Value.ToString());
            }

            if (render)
            {
                if (_items.ContainsKey(ITEMSKEY))
                {
                    var scripts = _items[ITEMSKEY] as List<HtmlString>;

                    var content = String.Concat(scripts);

                    output.Content.SetHtmlContent(content);
                }
            }
            else
            {
                List<HtmlString> list = null;

                if (!_items.ContainsKey(ITEMSKEY))
                {
                    list = new List<HtmlString>();
                    _items[ITEMSKEY] = list;
                }

                list = _items[ITEMSKEY] as List<HtmlString>;

                var content = await output.GetChildContentAsync();

                list.Add(new HtmlString(content.GetContent()));
            }
        }
    }

@section ***{
@RenderSection("****", required: false)
}