中国车牌号码正则表达式解析

This is a regular expression pattern used to match Chinese license plates. It consists of two parts:

1. /^[京津沪渝冀豫云辽黑湘皖鲁新苏浙赣鄂桂甘晋蒙陕吉闽贵粤青藏川宁琼使领A-Z]{1}[A-Z]{1}/

This part matches the first two characters of the license plate, which consists of a city code and a province code. The city code can be one of the following: '京津沪渝冀豫云辽黑湘皖鲁新苏浙赣鄂桂甘晋蒙陕吉闽贵粤青藏川宁琼使领'. The province code is a single uppercase letter.

2. ([0-9A-Z]{6}$)

This part matches the last six characters of the license plate, which can be a combination of numbers and uppercase letters. The $ symbol indicates the end of the string.

Therefore, this regular expression pattern matches strings that start with a city code and a province code, followed by six characters that can be numbers or uppercase letters.