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for..in loops iterate over the entire prototype chain, which is virtually never what you want.

浅笑19 2021-04-26 08:54 阅读:536 评论:0 推荐:0

The body of a for-in should be wrapped in an if statement to filter unwanted properties from the pro

浅笑19 2021-04-26 08:51 阅读:2038 评论:0 推荐:0