title: Faster Implementation of C++ like Map in Javascript
body: <p>I am only a beginner in javascript. I needed something similar to C++ map. So, I used this -</p>
  
  <pre><code>var map = new Object();
  map['key'] = 'value';
  </code></pre>
  
  <p>Although it worked fine, I was unhappy with the performance. It takes a long time when I tested it with a data set of about 100000 entry. Can you suggest a better solution to improve the performance?</p>