title: How to convert array into string without comma and separated by space in javascript without concatenation?
body: <p>I know you can do this through looping through elements of array and concatenating. But I'm looking for one-liner solutions. toString() and join() returns string with elements separated by commas.
  For example,</p>
  
  <pre><code>var array = ['apple', 'tree'];
  var toString = array.toString()    # Will return 'apple,tree' instead of 'apple tree', same for join() method
  </code></pre>