Node全局对象

console.log(__dirname);
console.log(__filename);

计时器全局对象

setTimeout(() => {
  console.log("setTimeout");
}, 0);

setInterval(() => {
  console.log("setInterval");
}, 1000);

setImmediate(() => {
  console.log("setImmediate");
});

process.nextTick(() => {
  console.log("process.nextTick");
});

global全局对象

console.log(global);

var name = "老谢";
console.log(name);
console.log(global.name);

console.log(global.process);