微任务宏任务题目

下面打印的顺序

1.低

console.log(1);
setTimeout(() => {
  console.log(2);
}, 0);
console.log(3);

2.中

console.log(1);
Promise.resolve().then(() => console.log(2));
console.log(3);

3. 高

console.log(1);
setTimeout(() => {
  Promise.resolve().then(() => console.log(2));
  console.log(3);
}, 0);
console.log(4);

4.高

console.log(1);
setTimeout(() => {
  console.log(2);
  Promise.resolve().then(() => console.log(3));
  setTimeout(() => console.log(4), 0);
}, 0);
console.log(5);

5.高

console.log(1);
setTimeout(() => {
  console.log(2);
  setTimeout(() => {
    console.log(3);
    setTimeout(() => console.log(4), 0);
    Promise.resolve().then(() => console.log(5));
  }, 0);
}, 0);
console.log(6);

6.

console.log(1);
setTimeout(() => {
  Promise.resolve().then(() => console.log(2));
  console.log(9)
  delay(2000)
  console.log(3);
}, 0);
console.log(4);
function delay(time) {
    const start = Date.now()
    while(Date.now() - start < time){
        
    }
}

7

console.log(1);
setTimeout(() => {
  Promise.resolve().then(() => console.log(11));
  console.log(9)
  Promise.resolve().then(() => console.log(22));
  delay(2000)
  Promise.resolve().then(() => console.log(33));
  console.log(3);
  Promise.resolve().then(() => console.log(44));
}, 0);
console.log(4);
function delay(time) {
    const start = Date.now()
    while(Date.now() - start < time){
        
    }
}