setTimeout函数在浏览器中和Node.js中的区别

var timeoutID = window.setTimeout(func, [delay, param1, param2, ...]);
var timeoutID = window.setTimeout(code, [delay]);//not recommended for the same reasons as using eval()

//param1, param2, and so forth are additional parameters which are passed through to the function specified by func.

//In Broswer
function f(){
alert("H");
}
function f2(){
setTimeout("f()", 2000);
}
window.onload = f2;

//In Node.js
function f(){
console.log("H");
}
function f2(){
setTimeout(f, 2000);
}
f2();