Primefaces Java <-> Javascript

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Calling java method from javascript

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<p:remoteCommand name="increment" actionListener="#{counter.increment}" 
out="count" />
 
<script type="text/javascript">
  function customfunction() {
    increment(); // Call increment method from counter bean based on remoteCommand name
  }
</script>

Calling javascript from java

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public void callJavascript() {
  RequestContext.getCurrentInstance().execute("refresh();");
}