string theory in the beginning, we learn about data types. simple and complex. primitive and abstract. primitive is inherently simple. two categories are reserved for the alphanumeric characters...
文章介绍了字符串的基本概念和操作方法。字符串是不可变的，javascript 提供了多种内置方法，如 `length`、`concat()`、`split()`、`slice()`、`substring()` 和 `substr()`，用于处理字符串。这些方法在处理字符串数组时尤为重要，帮助开发者有效管理和转换数据。
