javascript - disabling image map in mobile media screen -


i want disable image map while media screen in mobile screen.

i have trying include javascript in head tag of html file, shows error error :

<script src="http://code.jquery.com/jquery-1.11.3.min.js"></script> <script>     if($(window).width() < 1200){          /*document.getelementbyid("imgmap").removeattribute("usemap");*/         document.getelementbyid("imgmap").setattribute('usemap','disabled');     }     if($(window).width() > 1199){         document.getelementbyid("imgmap").setattribute('usemap','#map');     } </script>

and image map :

<img class="bdg-homeimg" id="imgmap" src="http://www.chiantisculpturepark.it/newdesign/img/pievasciata.jpg" usemap="#map"> <map name="map" id="map"> <area shape="rect" coords="90,100,140,120" title="massimoturato" href="massimoturato.htm" target="_blank" onclick="newwindow(this.href,'name','612','530','no');return false" /> <area shape="rect" coords="160,125,200,140" title="peperoni" href="peperoni.htm" target="_blank" onclick="newwindow(this.href,'name','615','490','no');return false" /> <area shape="rect" coords="260,125,290,135" title="edisusilo" href="edisusilo.htm" target="_blank" onclick="newwindow(this.href,'name','615','490','no');return false" /> <area shape="rect" coords="165,150,205,160" title="sandrobessi" href="sandrobessi.htm" target="_blank" onclick="newwindow(this.href,'name','617','495','no');return false" /> <area shape="rect" coords="120,175,165,190" title="fabiozacchei" href="fabiozacchei.htm" target="_blank" onclick="newwindow(this.href,'name','612','530','no');return false" /> <area shape="rect" coords="195,170,240,180" title="pierogiadrossi" href="pierogiadrossi.htm" target="_blank" onclick="newwindow(this.href,'name','617','495','no');return false" /> <area shape="rect" coords="180,180,210,190" title="eliacasini" href="eliacasini.htm" target="_blank" onclick="newwindow(this.href,'name','612','530','no');return false" /> <area shape="rect" coords="170,200,230,220" title="antonellafarsetti" href="antonellafarsetti.htm" target="_blank" onclick="newwindow(this.href,'name','612','530','no');return false" /> <area shape="rect" coords="180,255,230,265" title="yuzhaoyang" href="yuzhaoyang.htm" target="_blank" onclick="newwindow(this.href,'name','617','535','no');return false" /> </map>

and error:

referenceerror: $ not defined

need on this.

you can use directives of javascript getelementbyid etc without including library of use methods removeattr, setattribute have include javascript library. $ define in javascript library. that's why gives error of $ not define.

add javascript library.

<script src="//code.jquery.com/jquery-1.11.3.min.js"></script>

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