include - Including jquery in .js file -

i trying clone object using

var newobject = jquery.extend(true, {}, oldobject); 

as per john resig's answer what efficient way deep clone object in javascript? .

all information can find on using libraries in javascript show how use library within html file... in:

<script src="http://code.jquery.com/jquery-2.1.0.min.js"></script> 

my code in .js file , error jquery not defined. how use jquery within .js file?

edit: i'm running code in server.js file on node server. server.js has event handler gives index.html file upon getting "/" url. server.js file isn't included in index.html file , therefore including jquery in html file doesn't me, if understanding correct.

you can't include or link within .js file. have include on html page (<script src="/path/to/jquery"></script>), before include .js file.

technically could copy , paste jquery code above code in .js file, better idea include on page avoid conflicts.