文件名称：每天一篇javascript学习小结（基础知识）
文件大小：58KB
文件格式：PDF
更新时间：2024-02-11 05:05:45
AS asc c
1、字符转换 var s1 = 01; var s2 = 1.1; var s3 = z;//字母'z'无法转换为数字，所以或返回NaN var b = false; var f = 1.1; var o = { valueOf: function() { return -1; } }; s1 = -s1; //value becomes numeric -1 s2 = -s2; //value becomes numeric -1.1 s3 = -s3; //value becomes NaN b = -b; /