title: Join Array from startIndex to endIndex
body: <p>I wanted to ask if there is some kind of utility function which offers array joining while providing an index. Maybe Prototype of jQuery provides this, if not, I will write it on my own :)</p>
  <p>What I expect is something like</p>
  <pre><code>var array= [&quot;a&quot;, &quot;b&quot;, &quot;c&quot;, &quot;d&quot;];
  function Array.prototype.join(seperator [, startIndex, endIndex]){
    // code
  }
  </code></pre>
  <p>so that array.join(&quot;-&quot;, 1, 2) would return &quot;b-c&quot;</p>
  <p>Is there this kind of utility function in an pretty common Javascript Library?</p>
  <p>Regards<br />
  globalworming</p>