javascript - 通过正则表达式捕获第一个零

Question

我有一个字符串：

0012309test07

我想找到第一个零和字母。

00 12309测试07

当然，我找到了带有 的字母/[^\d]/，这是样本。

但是你如何捕捉第一个零？

Answer 1

使用这个正则表达式\b0+|[a-zA-Z]+

Answer 2

使用这种模式

(^(0*))|([a-zA-Z]+)

Answer 3

"0012309test07".match(/^(0*)(\d*)([^\d]+)(\d*)$/)

输出：["0012309test07", "00", "12309", "test", "07"]

"12309test07".match(/^(0*)(\d*)([^\d]+)(\d*)$/)

输出：["12309test07", "", "12309", "test", "07"]

"test07".match(/^(0*)(\d*)([^\d]+)(\d*)$/)

输出：["test07", "", "", "test", "07"]

"0test07".match(/^(0*)(\d*)([^\d]+)(\d*)$/)

输出：["0test07", "0", "", "test", "07"]

"1test07".match(/^(0*)(\d*)([^\d]+)(\d*)$/)

输出：["1test07", "", "1", "test", "07"]

"test".match(/^(0*)(\d*)([^\d]+)(\d*)$/)

输出：["test", "", "", "test", ""]