Core Views Events Style Sheets CSS Traversal Range HTML EventTarget addEventListener dispatchEvent removeEventListener EventListener handleEvent Event PhaseType bubbles cancelable currentTarget eventPhase target timeStamp type initEvent preventDefault stopPropagation EventException EventExceptionCode DocumentEvent createEvent UIEvent detail view initUIEvent MouseEvent altKey button clientX clientY ctrlKey metaKey relatedTarget screenX screenY shiftKey initMouseEvent MutationEvent attrChangeType attrChange attrName newValue prevValue relatedNode initMutationEvent