title: Using Strings as KEY of map in javascript
body: <p>Im using this 'map' on js:</p>
  
  <pre><code>   var myMap = new Object();
     myMap[key1]=value1; //like this n times...
  </code></pre>
  
  <p>but i want to use the key as some combination of two strings meaning:</p>
  
  <pre><code>  function getMapValue(str1,str2){...}
  </code></pre>
  
  <p>i dont mind joining the two strings into one long string and use the function with the long string</p>
  
  <p>any ideas?</p>