<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<div class="container">
<div class="row">
<div class="col-md-4 col-md-offset-4">
<h1 class="page-header">Load an array into select tag <code>Example</code></h1>
<select id="mySelect" class="form-control">
<option value="empty">empty</option>
</select>
</div>
</div>
</div>
var myArray = ["item1", "item2", "item3", "itemn"];
$(document).ready(function(){
var collect = '';
for(var i = 0; i<myArray.length;i++){
collect += '<option value="'+i+'">'+myArray[i]+'</option>';
}
document.getElementById("mySelect").innerHTML = collect;
})