title: How to post "all" checkbox values in google app script?
body: <p>I created a web app through google app script, which could generate a table of data for users to select for calculation. So I would generate a table with values and checkboxes through google sheet.(the table size may differ between users). 
  There is my sample code.</p>
  
  <pre><code>&lt;form role="qryForm" method="post" action="&lt;?!= ScriptApp.getService().getUrl() ?&gt;"&gt;
   &lt;button class="btn btn-success" type="submit" value="Submit"&gt;
   &lt;table&gt;
     &lt;tr&gt;
          &lt;td&gt;&lt;input type="checkbox" onchange="changeName(this)" name="uncheck" value ="100"&gt;&lt;/td&gt;
          &lt;td&gt;100&lt;/td&gt;
     &lt;/tr&gt;
  
     &lt;tr&gt;
          &lt;td&gt;&lt;input type="checkbox" onchange="changeName(this)" name="uncheck" value ="200"&gt;&lt;/td&gt;
          &lt;td&gt;200&lt;/td&gt;
     &lt;/tr&gt;
  
   &lt;/table&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>When the checkbox is clicked, a small function will change the name of input to be "checked".</p>
  
  <p>However, when the submit button is pressed, only the checked parameter is returned to the server. I looked at the event object (e.parameters), it dose not return the values under the name of "uncheck"</p>
  
  <p>I am expecting to get something like: check:[1,2,3,4], uncheck:[5,6,7,8]</p>
  
  <p>How do I get it down? or how do I get the values of all checkboxes in google appscript?</p>