SOURCE

function fn1(){
  console.log("111");
  setTimeout(function() {
    console.log(1)
  }, 0)
}
function fn2(){
  console.log("22")
}
fn1()
fn2()
//console.log(fn2)
//fn1(fn2);


/*Promises
@resolve 决定
@reject 拒绝
*/
let fn3 = new Promise((resolve,reject)=>{
    console.log('任务1：→',resolve,reject)
});
//fn3()
fn3.then((val)=>{
    console.log('任务2：→')
})


//await

//asnyc