摘要: 语法 arr.includes(searchElement) arr.includes(searchElement, fromIndex) 实例 检测数组 site 是否包含 runoob : let site = ['runoob', 'google', 'taobao']; site.inclu 阅读全文
posted @ 2020-03-29 18:45 85455 阅读(295) 评论(0) 推荐(0)