javascript - setAttribute equal to the attribute value thats set in my conditions -


hi guys i've run dilemma , not quite sure why code not working. understand supposed doing. not doing supposed to. please can see if can debug code. million. supposed set attribute based on option selected

html

        <select id="track_type_selected">         <option value="0" >51 track 3m</option>         <option value="1" >64 track 3m</option>         <option value="2" >103 track 3m</option>         </select>

javascript

    var e = document.getelementbyid("track_type_selected");     var selectedindex = e.options[e.selectedindex].value;     if(selectedindex==0){         $("#required_tracks_id").setattribute("sku","track3");     }     if(selectedindex==1){         $("#required_tracks_id").setattribute("sku","trk30");     }     if(selectedindex==2){         $("#required_tracks_id").setattribute("sku","track-1033");     }

in jquery can use attr function or set element attribute element attribute this.

$("#required_tracks_id").attr("sku");

and set element attribute

$("#required_tracks_id").attr("sku", "value");

in case use code bellow

var e = document.getelementbyid("track_type_selected"); var selectedindex = e.options[e.selectedindex].value; if(selectedindex==0){     $("#required_tracks_id").attr("sku","track3"); } if(selectedindex==1){     $("#required_tracks_id").attr("sku","trk30"); } if(selectedindex==2){     $("#required_tracks_id").attr("sku","track-1033"); }

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