javascript 擷取 sx:datetimepicker 的值

<div align="center"><sx:datetimepicker label="Start_Time" id="Start_Time" name="Start_Time1" displayFormat="yyyy/MM/dd" /></div> <div align="center"><sx:datetimepicker label="End_Time" name="End_Time" displayFormat="yyyy/MM/dd"/></div> <input id="test" type="text" > <script language="Javascript">   function myFunction(){     alert("begin");     var testdate= dojo.widget.byId("Start_Time");     alert(testdate.getValue());     return false; } </script> <s:submit value="Add" onclick="return myFunction();"/> </div>

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