title: Dynamically add spaces between concatenated strings
body: <p>I am wondering if it is possible to dynamically add space between two concatenated strings or integers. For example, here is simply concatenating a string and an integer:</p>
  
  <pre><code>var name = "Bruce"
  var age = 14
  name + " " + age
  =&gt; 'Bruce 14'
  </code></pre>
  
  <p>I would like the space between name and age be dynamic. <em>e.g.:</em></p>
  
  <pre><code>var name = "Bruce"
  var age = 14
  var numberOfSpaces = something
  name + 4 spaces + age
  =&gt; 'Bruce    14'
  </code></pre>
  
  <p>One of the use cases is drawing bar charts in dc.js where I can put name at the bottom and the value at the top of the bar. But this is unrelated. I am just curious if there is a method.</p>