Commit acaa546bf1ec74054ac72e2fee1a9eedd8b41759
1 parent
52c6f16f
添加 工具文件-onlyKey.ts，生成唯一标识；
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src/utils/onlyKey.ts
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| 1 | +/* | |
| 2 | + * @Date: 2021-12-23 09:49:48 | |
| 3 | + * @LastEditors: wangqiang@feewee.cn | |
| 4 | + * @LastEditTime: 2022-09-28 14:54:27 | |
| 5 | + */ | |
| 6 | +const onlyKeyArray: { [length: number]: string[] } = {}; | |
| 7 | +const source_string = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_'; | |
| 8 | + | |
| 9 | +interface GenerateOptions { | |
| 10 | + prefix?: string; // 唯一码前缀 | |
| 11 | +} | |
| 12 | + | |
| 13 | +/** | |
| 14 | + * @description: 生成唯一key | |
| 15 | + * @param {number} length key的长度，默认为8 | |
| 16 | + * @param {GenerateOptions} options | |
| 17 | + * @return {string} | |
| 18 | + */ | |
| 19 | +function generateOnlyKey(length: number = 8, options?: GenerateOptions): string { | |
| 20 | + let result = ''; | |
| 21 | + if (options?.prefix) { | |
| 22 | + result = options.prefix + result; | |
| 23 | + length -= options.prefix.length; | |
| 24 | + } | |
| 25 | + const _length = source_string.length - 1; | |
| 26 | + for (let i = 0; i < length; i++) { | |
| 27 | + //根据指定长度生成随机字符串 | |
| 28 | + // eslint-disable-next-line radix | |
| 29 | + const n = parseInt(`${Math.random() * _length}`); //获取随机数字 | |
| 30 | + result += source_string[n]; //映射成字符串 | |
| 31 | + } | |
| 32 | + if (onlyKeyArray[length] && onlyKeyArray[length].includes(result)) { | |
| 33 | + return generateOnlyKey(length); | |
| 34 | + } | |
| 35 | + if (onlyKeyArray[length]) { | |
| 36 | + onlyKeyArray[length].push(result); | |
| 37 | + } else { | |
| 38 | + onlyKeyArray[length] = [result]; | |
| 39 | + } | |
| 40 | + return result; //返回映射后的字符串 | |
| 41 | +} | |
| 42 | + | |
| 43 | +/** | |
| 44 | + * @description: 初始化唯一key对应长度数组， | |
| 45 | + * @description: 例如发布工作时，会有从草稿进来的工作，原本就有很多唯一key在上次生成， | |
| 46 | + * 如果重新编辑草稿，则需要将那些已经生成的唯一key初始化进来， | |
| 47 | + * 不然可能造成新生成的key和之前生成的key一样，导致数据逻辑判断错误，造成数据错乱 | |
| 48 | + * @param {number} length key的长度 | |
| 49 | + * @param {string} array 初始化key数组 | |
| 50 | + */ | |
| 51 | +function initOnlyKeyArray(length: number, array: string[]) { | |
| 52 | + onlyKeyArray[length] = [...new Set(array)]; | |
| 53 | +} | |
| 54 | + | |
| 55 | +/** | |
| 56 | + * @description: 删除对应长度的唯一key数组 | |
| 57 | + * @description: 主要用于在某个页面使用完以后，清空对应长度的数组 | |
| 58 | + * @param {number} length key的长度 | |
| 59 | + */ | |
| 60 | +function deleteOnlyKey(length: number) { | |
| 61 | + delete onlyKeyArray[length]; | |
| 62 | +} | |
| 63 | + | |
| 64 | +export default { | |
| 65 | + generateOnlyKey, | |
| 66 | + initOnlyKeyArray, | |
| 67 | + deleteOnlyKey, | |
| 68 | +}; | ... | ... |