title: Extjs/js multidemensional array convert to string
body: <p>I'm having a difficulty to construct a specific string from multidimensional array.
  <br/><br/>This is my array:<br/>
  <code>[[{query:'number:1', operand:''},
  [{query:'number:2', operand:'&amp;&amp;'},{query:'number:3', operand:'&amp;&amp;'}]],
  [{query:'number:4', operand:'||'},{query:'number:5', operand:'||'}]]</code>  </p>
  
  <p>How do I construct a string from this array to become like this:</p>
  
  <p><code>((number:1&amp;&amp;(number:2&amp;&amp;number:3))||(number:4||number:5))</code></p>
  
  <p>I've create a recursive function however the result does not return as I expected. <br/>Here is my code:</p>
  
  <pre><code>function queryRecursive(queArr){
  var que='';
  Ext.each(queArr, function(q,idx){
      if(Ext.typeOf(q)==='array'){
          que+=me.queryRecursive(q);
      }else{
          if(idx===0){
              if(q.operand===''){
                  que +=q.operand+q.query;
              }else{
                 que +=q.operand+'('+q.query;
              }
          }else if(idx===queArr.length-1){
              que +=q.operand+q.query+')';
          }else{
              que +=q.operand+q.query;
          }
      }
  });
  return que;
  }
  </code></pre>
  
  <p><br/>Here is the return result:</p>
  
  <p><code>number:1&amp;&amp;(number:2&amp;&amp;number:3)||(number:4||number:5)</code></p>