jsf - reset primefaces calendar date to system date -

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i designing page technology using jsf 2.0 , primefaces. in page insert prime faces calendar. when user click on calendar change default date, warning message shown dialog box containing 2 command button. trying when user click on cancel command button, date should changed default date populated first time page when page loaded. wrote java script not working. 

<label>date<label> <p:calendar readonlyinput="true" widgetvar="caldate" yearrange="c-20:c+20" navigator="true" id="b1incomeeffectfrom#{incmstatus.index}" value="#{userdate.effectivefrom}" pattern="dd/mm/yyyy">   <p:ajax event="dateselect" oncomplete="checkfordefault(this);" global="false"/> </p:calendar>  <p:dialog rendered="#{user.lock}" widgetvar="dlg1" header="warning" modal="true">   <h:panelgroup layout="block" styleclass="modal-dialog">     <h:panelgroup layout="block" styleclass="modal-content">       <h:panelgroup layout="block" styleclass="modal-body">         <div class="form-horizontal">           <h:panelgroup layout="block" styleclass="form-group">             <h:outputlabel styleclass="col-xs-8 control-label">are sure want change?</h:outputlabel>           </h:panelgroup>         </div>       </h:panelgroup>       <h:panelgroup layout="block" styleclass="modal-footer">         <p:commandbutton value="ok" type="button" styleclass="btn btn-primary" onclick="pf('dlg1').hide();pf('dlg2').show();" />         <p:commandbutton value="cancel" type="button" styleclass="btn btn-primary" onclick="resetdate();" />       </h:panelgroup>     </h:panelgroup>   </h:panelgroup> </p:dialog>

javascript

function resetdate(){   pf('dlg1').hide();   caldate.setdate(null); }

your calendar value coming backing bean (userdate.effectivefrom). have change value there take effect

<p:commandbutton value="cancel" type="button" styleclass="btn btn-primary"  onsuccess="pf('dlg1').hide()" action="#{userdate.resetdate()}" update="caldate" />  class userdate{ [..]    public void resetdate(){     this.effectivefrom = initialdate;   } [..] }

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