const Gen = (time) => { return new Promise((resolve, reject) => { setTimeout(function () { if(time < 500) { reject(time) } else { resolve(time) } },time) }) } Gen(Math.random() * 1000) .then(val => console.log('resolve', val)) .catch(err => console.log('reject', err)) .finally(() => { console.log('finish')})
Promise.finally
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转载自www.cnblogs.com/qjb2404/p/12231606.html
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