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Install ASP.NET Core UI manually, still uncorrect

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3 Answers, 1 is accepted

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answered on 16 May 2019, 04:08 PM

Hi,

The cause for the exception you are experiencing is jQuery being loaded twice in the project's _Layout.cshtml. It is loaded once in the head tag:

<environment include="Development">

<script src="~/lib/jquery/dist/jquery.js"></script>

@* Place Kendo UI scripts after jQuery *@

<script src="~/lib/kendo-ui/js/kendo.all.min.js"></script>

<script src="~/lib/kendo-ui/js/kendo.aspnetmvc.min.js"></script>

</environment>

and a second time at the end of the body:

<environment include="Development">

<script src="~/lib/jquery/dist/jquery.js"></script>

<script src="~/lib/bootstrap/dist/js/bootstrap.js"></script>

<script src="~/js/site.js" asp-append-version="true"></script>

</environment>

The same is valid for the environment tags with exclude="Development" attribute:

<environment exclude="Development">

...

</environment>

Loading jQuery multiple times should be avoided - it must be added only once on the page before the Kendo UI scripts.

Leaving only the first reference to jQuery in the project's Layout deals with the js exception

Regards,
Ivan Danchev
Progress Telerik

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