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GeezerVison is showing zh.javascript.info — 访问 array[-1] 回到课程 访问 array[-1]在某些编程语言中,我们可以使用从尾端算起的负值索引访问数组元素。 像这样:
换句话说, 创建一个 proxy 来实现该行为。 其工作方式应如下:
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