var first = 'hello nodejs';console.log(first);function fn (){ console.log('fn函数被调用了');}fn ();for (var i = 0; i <5; i ++) { console.log(i);}if (true){ console.log('123');}console.log('文件被修改了')

global.console.log('我是global对象下面的console.log方法输出的内容');global.setTimeout(function() { console.log('123');}, 2000);console.log('我是global对象下面的console.log方法输出的内容');setTimeout(function() { console.log('456');}, 2000);