#Javascript Introduction/Javascript简介

JavaScript is the programming language of the Web. The overwhelming majority of modern websites use JavaScript, and all modern web browsers—on desktops, game consoles, tablets, and smart phones—include JavaScript interpreters, making Java-Script the most ubiquitous programming language in history. JavaScript is part of the triad of technologies that all Web developers must learn: HTML to specify the content of web pages, CSS to specify the presentation of web pages, and JavaScript to specify the behavior of web pages.

JavaScript是面向web的编程语言。大多数现代浏览器都在使用JavaScript，并且所有的现代web浏览器——基于pc桌面、游戏机、平板电脑和智能手机的浏览器，都包含了JavaScript解释器。这使得JavaScript成为史上应用最广泛的编程语言。JavaScript也是前端工程师必须掌握的三大技能之一：展示网页内容的HTML、描述网页样式的CSS以及描述网页行为的JavaScript。