摘要: 1. typeof 使用typeof判断数据类型 let obj = { name: 'Davie' }; function foo() { console.log('this is a function'); } let arr = [1,2,3]; let s = Symbol(); conso 阅读全文
posted @ 2021-11-18 17:15 小新没蜡笔哦 阅读(62) 评论(0) 推荐(0)