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                ThinkChat2.0新版上線,更智能更精彩,支持會話、畫圖、視頻、閱讀、搜索等,送10W Token,即刻開啟你的AI之旅 廣告
                # 閉包 閉包是指能夠訪問其他作用域變量的函數 [閉包原理解釋](https://mp.weixin.qq.com/s?__biz=MzAxODE2MjM1MA==&mid=2651553785&idx=1&sn=a8efd632cc52dac510b6dee87b50ccaa&chksm=8025a838b752212e141c83d08f55ce5d56f79e70e0bfca8dea9559175876b021bc41aa741b75&scene=38#wechat_redirect) ### 作用 一個是前面提到的可以讀取函數內部的變量,另一個就是讓這些變量的值始終保持在內存中。 ### 注意的問題 - 由于閉包會使得函數中的變量都被保存在內存中,內存消耗很大, - 閉包會在父函數外部,改變父函數內部變量的值
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