javascript javascript承诺很棘手

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// 1)
let promise = new Promise(
  (resolve, reject)=>{
    console.log("Promise 1");
    resolve();
  }
);

promise.then((resolve)=>{console.log("Promise 2");}, (reject)=>{console.log("reject 1");});
promise.then((resolve)=>{console.log("Promise 3")}, (reject)=>{console.log("reject 2");});
promise.then((resolve)=>{console.log("Promise 4")}, (reject)=>{console.log("reject 3");});

//2)
let promise = new Promise(
  (resolve, reject)=>{
    console.log("Promise 1");
    resolve();
  }
);

promise.then((resolve)=>{console.log("Promise 2");}, (reject)=>{console.log("reject 1");})
.then((resolve)=>{console.log("Promise 3")}, (reject)=>{console.log("reject 2");})
.then((resolve)=>{console.log("Promise 4")}, (reject)=>{console.log("reject 3");});

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