This task-based, visual-reference guide has been fully revised and uses step-by-step instructions and plenty of screenshots to give beginning and intermediate scripters what they need to know to keep their skills up-to-date. Readers can start from the beginning to get a tour of the programming language, or look up specific tasks to learn just what they need to know. In this updated eighth edition, readers will find new information on using frameworks and libraries--such as jQuery--and modern coding techniques.