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var Q = require("q");
http://www.ituring.com.cn/article/54547
http://www.chenqing.org/2014/05/use-q-js-to-promise-in-node.html
Q.fcall(delayOne).then(delayTwo).then(delayThree).then(delayFour).done();
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原文地址:http://www.cnblogs.com/zyip/p/4302939.html