Chapter 13 Basic DOM scripting Objectives Applied 1. Write code that uses the properties and methods of the DOM and DOM HTML nodes. 2. Write an event handler that accesses the event object and cancels the default action. 3. Write code that preloads images. 4. Write code that uses timers. Knowledge 1. Describe these properties and methods of the DOM Node type: nodeType, nodeName, nodeValue, parentNode, childNodes, firstChild, hasChildNodes. 2. Describe these properties and methods of the DOM Document type: documentElement, getElementsByTagName, getElementsByName, getElementById. 3. Describe these properties and methods of the DOM Element type: tagName, hasAttribute, getAttribute, setAttribute, removeAttribute. 4. Describe the id and title properties of the DOM HTMLElement type. 5. Describe the href property of the DOM HTMLAnchorElement type. 6. Describe the src property of the DOM HTMLImageElement type. 7. Describe the disabled property and the focus and blur methods of the DOM HTMLInputElement and HTMLButtonElement types. 8. Describe these timer