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a=new Promise(()=>setTimeout(function(){console.log("123")},3000))
a.then(()=>console.log('321'))

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
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你没有resolve啊


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
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Welcome to ShenZhenJia Knowledge Sharing Community for programmer and developer-Open, Learning and Share
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