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# Promise深入理解  ## 什么是**Promise** **Promise**的核心理念是一个异步操作的结果，**Promise**包含两部分 + `[[PromiseStates]]` + `[[PromiseValue]]` **Promise**状态三种可能： + `pending`: 悬而未决 + `resolved`: 决定 + `rejected`: 拒绝  ## 异步性 ```javascript const p = new Promise((resolve, reject)...
