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#27ES6的数值扩展
2022-06-27 15:23:00 【sanda_nd】
1、Number.EPSILON 是JavaScript 表示的最小精度(EPSILON的值接近于2.22044……E-16,用来判断浮点数精度)
2、二进制、八进制和十六进制
3、Number.isFinite 检测一个数值是否为有限数
4、Number.isNaN 检测一个数值是否为NaN
5、Number.parseInt Number.parseFloat 字符串转整数
6、Number.isInteger 判断一个数是否为整数
7、Math.trunc将数字的小数部分抹掉
8、Math.sign 判断一个数到底为正数,负数,还是0
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