console 命令行工具 X clear

console

function Resolve(resolve,reject){
    resolve('hey');
}

function Reject(resolve,reject){
    resolve('no');
}

let P=new Promise(Resolve);
//let R=new Promise(Reject)
P.then(res=>{console.log(res);return new Promise(Reject)}).then(res=>console.log(res))
//R.then(res=>{console.log(res);})