内容基本是今年从其他大神的文章学习到的东西。分享给大家：
1 Array.includes 与条件判断
一般我们判断或用 ||
// condition
function test(fruit) {
if (fruit == "apple" || fruit == "strawberry") {
console.log("red");
}
}
如果我们有更多水果
function test(fruit) {
const redFruits = ["apple", "strawberry", "cherry", "cranberries"];
if (redFruits.in
