求任意两个数字之和
function sum(num1, num2) {
console.log(num1, num2);
console.log(num1 + num2);
}
sum(10, 20);
sum(100, 200);
// 求任意多个数字之和
function sums() {
var total = 0;
for (var i = 0; i < arguments.length; i++) {
console.log(arguments[i]); total += arguments[i];
}
console.log(total);
}
sums(10, 20);
sums(10, 20,100,200);
sums(10, 20,100,200,1000);
