var _words = app.activeDocument.stories.everyItem().words 
for ( var w = 0; w < _words.length; w++ ) {  
var mySel = app.activeDocument.stories.everyItem().words[w].characters.firstItem(); 
try {  
    var myFontFamily = mySel.appliedFont.fontFamily;  
    var myFontStyle = mySel.characters.firstItem().appliedFont.fontStyleName;  
    var myCharacterSize = mySel.characters.firstItem().pointSize; 
} 

var _words = app.activeDocument.stories.everyItem().words  
for ( var w = 0; w < _words.length; w++ ) {   
var mySel = app.activeDocument.stories.everyItem().words[w].characters.firstItem();  
    var myFontFamily = mySel.appliedFont[0].fontFamily;   
    var myFontStyle = mySel.appliedFont[0].fontStyleName;   
    var myCharacterSize = mySel.pointSize;  
    alert(myFontFamily + myFontStyle + myCharacterSize) 
}