console.log('1','1');
setTimeout(function() {
console.log('2','5');
process.nextTick(function() {
console.log('3','7');
});
new Promise(function(resolve) {
console.log('4','6');
resolve();
}).then(function() {
console.log('5','8');
});
});
process.nextTick(function() {
console.log('6','3');
});
new Promise(function(resolve) {
console.log('7','2');
resolve();
}).then(function() {
console.log('8','4');
});
setTimeout(function() {
console.log('9','9');
process.nextTick(function() {
console.log('10','11');
})
new Promise(function(resolve) {
console.log('11','10');
resolve();
}).then(function() {
console.log('12','12')
});
})
![](https://img2020.cnblogs.com/blog/1258737/202112/1258737-20211207174940807-1975551350.jpg)