Combine object key values into single string with separator
<p>I want to achieve this:</p>

<pre><code>var keys = ['name', 'description']

var obj = {
  id: 1,
  name: 'Test',
  description: 'Lorem ipsum dolores',
  moreKeysHere: 'moreValues'
}

console.log(obsKeysToString(obj, keys, '-'))
</code></pre>

<p>Result: <code>Test - Lorem ipsum dolores</code></p>

<p>I have some solution with <code>for</code> loop, and some stirring operations and so on but I am sure there's a better way..</p>