摘要: 1.注释// This is an in-line comment./* This is a multi-line comment */ 2.数据类型undefined(未定义), null(空), boolean(布尔型), string(字符串), symbol(符号), number(数字), 阅读全文
posted @ 2019-08-26 21:56 梨子233 阅读(169) 评论(0) 推荐(0) 编辑