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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | 23x 23x 23x 23x 14x 14x 20x 20x 5x 15x 1x 14x 5x 9x 153x 153x 9x 9x | const testRegExp = /^(11|12|13|14|15|21|22|23|31|32|33|34|35|36|37|41|42|43|44|45|46|50|51|52|53|54|61|62|63|64|65|71|81|82)[0-9]{15}[0-9Xx]$/
const weightMap = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2]
const codeMap = ['1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2']
const isValidDate = (year: number, month: number, day: number): boolean => {
const date = new Date(year, month - 1, day)
return (
date.getFullYear() === year &&
date.getMonth() + 1 === month &&
date.getDate() === day &&
date.getTime() < new Date().getTime() &&
year > 1900
)
}
/**
* 检测传入的值是否是合法的中国大陆居民 `18` 位身份证号码。
*
* @public
* @param value 要检测的值
* @returns 返回检测结果
* @example
* ```typescript
* isChineseIDCardNumber('123456') // => false
* ```
*/
export function isChineseIDCardNumber(value: string): boolean {
const len = value.length
// 长度错误
if (len !== 18) {
return false
}
// 模式校验
if (!testRegExp.test(value)) {
return false
}
// 出生日期
if (
!isValidDate(
+value.substr(6, 4),
+value.substr(10, 2),
+value.substr(12, 2),
)
) {
return false
}
// 校验码
const sum = value
.split('')
.slice(0, 17)
.reduce((s, num, index) => {
s += +num * weightMap[index]
return s
}, 0)
const code = codeMap[sum % 11]
return code === value[17].toUpperCase()
}
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