const fs = require('fs');
(function mainline() {
Promise.resolve().then(res => { console.log('D') });
process.nextTick(res => { console.log('C') });
console.log('A');
setTimeout(() => {
console.log('N')
process.nextTick(() => { console.log('O') })
},0); // delay 爲 80 的時候答案時多少呢?
setImmediate(() => {
console.log('G');
fs.readFile('./vuex.mp4', 'utf8', (err, files) => { console.log('J') })
});
fs.readFile('./vuex.mp4', 'utf8', (err, files) => {
console.log('E');
setTimeout(() => { console.log('M') }, 50);
setTimeout(() => { console.log('L') },20);
setImmediate(() => { console.log('H') });
process.nextTick(() => {
console.log('F');
setImmediate(() => {
console.log('I');
setImmediate(() => {
console.log('K');
});
});
setTimeout(() => { console.log('我在哪裏') }, 0);
});
console.log('我又在哪裏')
});
console.log('B');
})();
複製代碼
答案是什麼呢?vue
若是你能在不運行代碼的狀況下說出答案,那麼,恭喜你戰勝了99%的node工程師。node