gistfile1.txt

// data array
var foo = [{title: ‘1’, value: ‘1’ }, {title: ‘2’, value: ‘2’ }]

// html for new select
var html= [
   '<select>',
   foo.map(function(item){ return '<option value="' + item.value + '">' + item.title + '</option>' }),
   '</select>'
].join('');

// find old select container in DOM
var oldSelectContainer = document.getElementById('select-container');

// replace content with new select
oldSelectContainer.innerHTML = html