JS 列出此元件所有物件

很好用的簡單function
debug都是靠這個

<script>
function listprop(obj) { 
  window3=window.open('','messageWindow','scrollbars=yes,resize=yes,width= 800,height= 800');
 str = "";
 for (var i in obj)
  str= str + "obj." + i + "=" + obj[i] +"
\n";
 window3.document.writeln(str);
}
</script>