title: $("myDropDown option[value*='? object']") what exact this mean, in Jquery?
body: <p>I came to face below code in my project in Jquery. 
  But didn't get meaning of that line. </p>
  
  <pre><code>if($("#myDropDown option[value*='? object']").length&gt;0 ||
  $("#myDropDown option[value*='? number']").length&gt;0 ||
  $("#myDropDown option[value*='? string']").length&gt;0)
  {
   $("#myDropDown").find('option:first').remove();
  }
  </code></pre>
  
  <p>Can any one explain what does it mean. I know that if condition match, it will remove first option from dropdown. but what is exact meaning of condition? 
  Is it searching for type of value in option? which I believe always string, then why it required object and number.</p>