console.log()
setTimeout
setInterval
var time = 0; var timer=setInterval(() => { time+=3; console.log(time+" sec pass"); if (time>10) clearInterval(timer); }, 3000);
console.log(__dirname)
console.log(__filename)
回调函数
function CallFunc(Fun, name) { Fun(name); } var Func = function(name) { console.log('Bye '+ name); } CallFunc(Func,'Li');
arr=[‘A’,’B’,’C’];
arr.length=3
require(‘./*.js’) 当前目录引用
npm run serve