JSFiddle - React, Tailwind, and code Playground

HTML

<select multiple id="show_results" name="subjects" >
<option>dzfxgchvjb</option>
</select>

JavaScript

var obj = {
 2: "Aerospace Medicine Count(50)",
 3: "Abdominal Radiology (DR) Count(65)",
 4: "Addiction Psychiatry (P) Count(46)",
 5: "Adolescent Medicine (PD) Count(23)"
};

var newOption = '';
$.each(obj, function(index, itemData) {
        newOption += "<option value='" + index + "'>" + itemData + "</option>";
        $("#show_results").html(newOption);
    });