title: $.extend with excluding some JSON objects
body: <p>please refer below code.</p>
  
  <pre><code>var series=$.extend({},true,options,this.model.series);
  </code></pre>
  
  <p>this will merge all JSON objects from options to this.model.series. i want to exclude single JSON object from merging options with this.model.series</p>
  
  <pre><code>options:{style:{},points:[{},{}], marker:{},...} 
  </code></pre>
  
  <p>i want to merge or copy all json objects from options to this.model.series <strong><code>except points</code></strong>.</p>
  
  <p>because for 10,000 points it takes long time to merge all json objects with this.model.series this will degrades the performance.</p>
  
  <p>how can i improve the performance by efficiently using $.extend ( may be points merging takes too much time). how can i do for this case ?</p>
  
  <p>Thanks,</p>
  
  <p>Siva</p>