myfaces-html5-demo/src/main/webapp/resources/script/demo/common.js

function submitForm(formId){
   var form = document.getElementById(formId);

   var formValid = form.checkValidity();
   if(formValid){
       return true;
   }
   else{
       var elems = document.querySelectorAll('#' + formId + " :invalid");
       if(elems && elems.length>0){
         elems[0].focus();
       }
   
       return false;
   }
}

function removeCDataAndTrim(){
    var elementsByClassName = document.getElementsByClassName('prettyprint');
    var ua = navigator.userAgent;
    var isOpera = parseFloat(ua.split('Opera/')[1]) || undefined;
    for (var i=0; i<elementsByClassName.length; i++) {
        var innerHTML = elementsByClassName[i].innerHTML;
        if(isOpera)     //behaves different in Opera
            innerHTML = innerHTML.substr(10, innerHTML.length - 16);
        else
            innerHTML = innerHTML.substr(11, innerHTML.length - 16);
        innerHTML = innerHTML.replace(new RegExp("^[\\s]+", "g"), "");
        innerHTML = innerHTML.replace(new RegExp("[\\s]+$", "g"), "");
        elementsByClassName[i].innerHTML = innerHTML;
    }
}


function handleAjaxEvent(e){
   if(e.status == 'success'){
     alert('Request sent and respose recieved.');
     return false;
   }
   return true;
}

function handleAjaxError(e){
   if(e.status == 'serverError'){
     alert('An error occurred during Ajax request. If you are on Google App Engine, please refresh the page. Unfortunately the view is expired on Google App Engine too early.');
     return false;
   }
   return true;
}