javascript option

1/* assuming we have the following HTML
2<select id="s">
3    <option>First</option>
4    <option>Second</option>
5    <option>Third</option>
6</select>
7*/ 
8
9var s = document.getElementById('s');
10var options = [ 'zero', 'one', 'two' ];
11
12options.forEach(function(element, key) {
13  if (element == 'zero') {
14    s[s.options.length] = new Option(element, s.options.length, false, false);
15  }                
16  if (element == 'one') {
17    s[s.options.length] = new Option(element, s.options.length, true, false); // Will add the "selected" attribute    
18  }
19  if (element == 'two') {
20    s[s.options.length] = new Option(element, s.options.length, false, true); // Just will be selected in "view"
21  }
22});
23
24/* Result
25<select id="s">
26  <option value="0">zero</option>
27  <option value="1" selected="">one</option>
28  <option value="2">two</option> // User will see this as 'selected'
29</select>
30*/