問題
function fn1(){
console.log("[" + arguments.length + "]" + arguments[0]);
}
fn1(10); //=> [1]10
function fn2(){
console.log("[" + arguments.length + "]" + arguments[0] + ", " + arguments[1]);
}
fn2(10); //=> ?
問題
function fn1(){
console.log("[" + arguments.length + "]" + arguments[0]);
}
fn1(10); //=> [1]10
function fn2(){
console.log("[" + arguments.length + "]" + arguments[0] + ", " + arguments[1]);
}
fn2(10); //=> [1]10, undefined