Web programming
- 2. Intrinsic Event Handling An event is an occurrence of something potentially interesting to a script: Ex: mouseover and mouseout events An HTML intrinsic event attribute is used to specify a script to be called when an event occurs Ex: onmouseover Name of attribute is on followed by event name
- 3. Guy-Vincent Jourdan :: CSI 3140 :: based on Jeffrey C. Jackson’s slides 3
- 6. Intrinsic event attribute value is a script; what language is it written in? HTTP Content-Script-Type header field specifies default scripting language meta element allows document to specify values as if they were header fields
- 9. Rules for forming style property names from names of CSS style properties: If the CSS property name contains no hyphens, then the style object’s property name is the same Ex: color color Otherwise, all hyphens are removed and the letters that immediately followed hyphens are capitalized Ex: background-color backgroundColor
- 10. 10 Modifying Element Style Net effect: “silver” becomes the specified value for CSS background-color property of td element; browser immediately modifies the window.
- 11. Advantages of setProperty() syntax: Makes it clear that a CSS property is being set rather than merely a property of the style object Allows CSS property names to be used as-is rather than requiring modification (which can potentially cause confusion)
- 12. Obtaining specified CSS property value: Alternate DOM2 syntax (not supported by IE6):
- 13. Document Tree Recall that HTML document elements form a tree structure, e.g., DOM allows scripts to access and modify the document tree
- 14. There are many types of nodes in the DOM document tree, representing elements, text, comments, the document type declaration, etc. Every Object in the DOM document tree has properties and methods defined by the Node host object
- 17. String produced by TreeOutline():