JavaScript is a trademark of Sun Microsystems. The language was originally
called Live Script and its name was later changed to JavaScript.
This will explain briefly all about JavaScript, and its use to display message
boxes, change images when a user rolls a mouse over an area of the webpage.
Last updated on 2019年07月25日
此版本包含小幅错误修复和常规改进。请更新至最新版本，以获得更佳体验。
