SOURCE

const isPregnant = false;

const promise = new Promise((resolve,reject) =>{
    if(isPregnant){
        resolve('孩子他爹')
    }else {
        reject('老公');
    }
});

promise
    .then(name =>{
        console.log('男人成为了' + name)
    })
    .catch(name =>{
        consle.log('男人成为了' + name)
    })
    .finally(() =>{
        console.log('男人和女人最终结婚了')
    })