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你真的完全掌握了promise么？
source link: https://juejin.im/post/5af29a62f265da0b8f628973
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最近在整理js中异步编程方法时，回顾了一下promise，又发现了一些遗漏的重要知识点，比如promise.resolve()传递不同参数的含义？比如当一个promise依赖另一个promise时事件执行顺序？比如当catch捕获到了错误后，会不会继续执行后面
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