Content

id, name — Accessing elements with document.getElementById() (W3C) instead of document.all (IE)

Events: keyDown, keyPress and keyUp — Handling keyboard events

Events: target, srcElement — Obtaining the source element with Event.target (W3C) and Event.srcElement (IE)

Cancelling events — Making use of true/false return values

Frames — Addressing frames, changing the location.(href|replace)

contentWindow — Addressing the window Object from a frame/iframe

innerText and textContent — Once again: IE vs the rest

Location — Changing the location with/without history entry

Options — Modifying options in a selection

null/undefined — Difference between null and undefined

Intervals and Timeouts — How to use

Arrays — Size of multi-dimensional arrays

Select text — Doing it programmatically

Lambda expressions — and anonymous functions

Deactivated JavaScript — Give the user a hint

Practices

Examples

Mouseover example

Timeout example

Cancelling events example #1

Cancelling events example #2

Event library for W3C browsers and IE, providing functions to return the event, the keyCode, and the srcElement in Firefox, IE, Opera, Safari, …:

Download

Links

JavaScript Code Conventions

W3C DOM Compatibility Tables

Quirksmode’s Sitemap, very valuable resource

JSLint, excellent JavaScript Verifier

JavaScript tutorial - Browser inspecific referencing, also about frames

Javascript Best Practices

DOM Level 2 Core Specification