javascript - Why doesnt my .hide() or any JS code work? -


i'm pretty new javascript , programming in general, started coding little website , cant seem simple .hide() working. 

<div id="x" style="width:100px; height:100px; background-color:red;"/>

js

$(document).ready( function() {     $("#x").hide(); });

fiddle

include in <head>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>

here's fiddle jquery library, works!

https://jsfiddle.net/m9u3vcwc/2/


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