generateId() { const s = []; const hexDigits = '0123456789abcdef'; for (let i = 0; i < 36; i++) { s[i] = hexDigits.substring(Math.floor(Math.random() * 0x10), 1); } // bits 12-15 of the time_hi_and_version field to 0010 s[14] = '4'; // bits 6-7 of the clock_seq_hi_and_reserved to 01 s[19] = hexDigits.substring((s[19] & 0x3) | 0x8, 1); s[8] = s[13] = s[18] = s[23] = '-'; const uuid = s.join(''); return uuid; },
时间: 2024-04-15 14:29:55 浏览: 70
id3-ts-lib:仅ID3的MPEG2TS段生成器库
generateId() {
const s = [];
const hexDigits = '0123456789abcdef';
for (let i = 0; i < 36; i++) {
s[i] = hexDigits.substring(Math.floor(Math.random() * 0x10), 1);
}
s[14] = '4';
s[19] = hexDigits.substring((s[19] & 0x3) | 0x8, 1);
s[8] = s[13] = s[18] = s[23] = '-';
const uuid = s.join('');
return uuid;
}
```
This code generates a UUID (Universally Unique Identifier) using a random number generator and string manipulation. The UUID generated follows the version 4 UUID format, which is commonly used for generating unique identifiers in various applications.
The generated UUID consists of 32 hexadecimal digits separated by hyphens in the form: `xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx`, where `x` represents a random hexadecimal digit and `y` represents a random hexadecimal digit from the set `[8, 9, A, or B]`.
The purpose of generating a UUID is to ensure that each generated identifier is unique, reducing the chances of collisions when using these identifiers in distributed systems or when creating unique references.
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