MVC – JavaScript runtime error: ‘$’ is undefined

I was getting this error when I tried to add some jQuery code to a View, something really simple like this:

    alert($("#users").val());

Blammo – the “JavaScript runtime error: ‘$’ is undefined” message. Luckily, it was straight-forward to fix. I simply went into the “_Layout.cshtml” file in my Views\Shared folder and added “@Scripts.Render(“~/bundles/jquery”)” inside the <head> tag:

    <head>
        …..
        @Scripts.Render("~/bundles/jquery")
        @Scripts.Render("~/bundles/modernizr")
    </head>
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