javascript - Set input attribute based on slected option -


hi guys i'm bit lost @ moment. i'm trying set sku of input field based on selected option. i've tried code below. doesn't seem working. please try provide insight can.

here's 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>         <input type="number" name="required_tracks_name" id="required_tracks_id" class="sku" sku="" disabled="">

and here's javascript. 

    if ('#track_type_selected' == 1) {         '#required_tracks_id'.sku('track3');     }else if('#track_type_selected' == 2) {         '#required_tracks_id'.sku('trk30');     }else if ('#track_type_selected' == 3) {         '#required_tracks_id'.sku('track-1033');     }

basically option equal set value. need sku set set value.

before go on solution, can understand have basic 0 knowledge javascript.. make sure understand how javascript syntax works continue.

to selected option use code:

var e = document.getelementbyid("track_type_selected"); var selectedindex = e.options[e.selectedindex].value;

selectedindex variable should include current selected index. (1,2,3.. etc)

so can this:
if(selectedindex==1){/* code */}

now, sku attribute (since confirmed use jquery) can this:
$("#required_tracks_id").attr("sku");

make sure check .attr usage , edit needs.


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