1. Introduction
An object-based and event-driven interpreted scripting language with security performance, which can not only write client-side script programs (interpreted and executed by Web browsers) but also server-side execution scripts (process user-submitted information and dynamically send them to browsers). It can combine HTML, XML, Ajax, Java Applet, Flash and other powerful Web objects organically.
Slightly different from other languages is that it needs to be compiled first, and only incrementally interpreted as the program runs.
Variable types are weakly typed.
Dynamic can directly respond to the user's input without going through the web service program, and the user's response is carried out in an event-driven way.
Second, offer simple multiplication formulas
Third, the simple usage of the with statement
