1.
try {
.....
} catch (e) {
e.description;
}
2.object
a.common:
getElementById(),getElementsByTagName,getElements,getElementsByClassName
innerHTML, innerTEXT, type,tagName
typeof (typeof element == 'object')
if ((typeof o == "object") && (o.constructor == Date))
b.event:
srcElement (window.event.srcElement.parentElement)
keyCode
3.
parseInt()
4.
arguments
5.getElementsByTagName
bod = document.getElementsByTagName('body')[0];