only loading jquery and chrome - Uncaught TypeError: undefined is not a function

Hello,

i have a strange problem with jquery and chrome, current windows version.

i have this bit of code

<!DOCTYPE html>
<html>
    <head>
        <title>test</title>
        <script src="//code.jquery.com/jquery-1.11.0.min.js"></script>
    </head>

    <body>
    </body>
</html>

and in the error log in chrome i got

Uncaught TypeError: undefined is not a function

Why ? What is wrong ?

test