title: How to get sum of many div height using javascript?
body: <p>HTML div contain dynamic data, For calculate div height i used </p>
  
  <pre><code>var pageSize = 990;
      var clientHeight = 300;
      clientHeight = document.getElementById('testing1').clientHeight;
      var selector_classes = ['career_sum', 'exp_cal', 'ref_cal', 'port_cal', 'curri_cal', 'certi_cal'];
      selector_classes.forEach(function(element) {
          clientHeight = document.getElementById('testing').clientHeight + clientHeight;
      });
  </code></pre>
  
  <p>Testing is same id for div</p>
  
  <p>That working fine. My question is how can i set style for those div which position greater than pagesize?
  Can anyone help me?</p>