Why not fires when you double-click the change color jQuery?

here is the code , I can not understand why does not work double click on method .dblclick()
please tell me where is the error ?
March 19th 20 at 08:54
2 answers
March 19th 20 at 08:56
<button id="button-1"


Cool. Do you really think that "u" and "o" are one and the same letter?

And the console welcomes us: "Uncaught ReferenceError: $ is not defined". Someone forgot to include jquery?
fixed , but still not working - Grace.Anders commented on March 19th 20 at 08:59
@Grace.Anders, again, the jquery plug in. - zachariah.Murazi commented on March 19th 20 at 09:02
March 19th 20 at 08:58
You jQuery in the settings codepen'not hooked up. Go to settings and add the library to the download.

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