用promise.race实现promise中断

let promise = new Promise((resolve,reject)=>{
    setTimeout(() => {
        resolve('ok 成功了')
    }, 10000);
})

const wrap = promise=>{
    let abort
    let myP = new Promise((resolve,reject)=>{
        abort = reject
    })
    let p = Promise.race([promise,myP])
    p.abort =abort
    return p
}

let p = wrap(promise)
p.then(data=>{
    console.log(data);
},(err)=>{
    console.log(err);
})
setTimeout(() => {
    p.abort('promise 超时')
}, 2000);

 

//强制中断
Promise.resolve(100).then().then(()=>{
    return new Promise((resolve,reject)=>{

    })
}).then(data=>{
    console.log(data)
},err=>{
    console.log(err)
})