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csdn
3 年
let变量和const变量有什么区别?
ES6新增let命令,用来声明变量,他的用法类似于var,但是所声明的变量,只在let命令所在的代码块内有效。 主要给大家介绍了在JavaScript中const、let与var对比的相关资料,文中通过示例代码介绍的非常详细,对大家具有一定的参考学习价值,需要的朋友们下面跟着 ...
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