add class glossary of zh-cn (#16)

* add class glossary of zh-cn

files/zh-cn/glossary/class/index.html

@@ -0,0 +1,19 @@
+---
+title: Class（类）
+slug: Glossary/Class
+tags:
+  - 编码脚本
+  - 术语表
+---
+<p>在面向对象编程中（{{glossary("OOP","object-oriented programming")}}）, 一个 <em>类</em> 定义了一个对象（{{glossary("object","object's")}}）的特征. 类是定义对象属性（{{glossary("property","properties")}}）和方法（{{glossary("method","methods")}}）的模板, 是用来绘制具体对象实例的“蓝图”.</p>
+
+<h2 id="Learn_More">了解更多</h2>
+
+<h3 id="General_knowledge">基本知识</h3>
+
+<ul>
+ <li><a href="/en-US/docs/Web/JavaScript/Guide/Details_of_the_Object_Model#Class-based_vs._prototype-based_languages">Class-based vs. prototype-based programming languages</a> (like JavaScript)</li>
+ <li><a href="/en-US/docs/Learn/JavaScript/Objects#The_Class">Using functions as classes in JavaScript</a></li>
+ <li><a href="https://en.wikipedia.org/wiki/Class-based_programming">Class-based programming</a> on Wikipedia</li>
+ <li><a href="https://en.wikipedia.org/wiki/Object-oriented_programming">Object-oriented programming</a> on Wikipedia</li>
+</ul>