antd-mobile-taro-ui/es/utils/uuid.js

以antd-mobile为设计标准，基于taro框架的微信小程序组件库

export function uuid(len = 16, radix, number) {
  let str = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';

  if (number) {
    str = '0123456789' + str;
  }

  const chars = str.split('');
  const value = [];
  let i = 0;
  radix = radix || chars.length;

  if (len) {
    for (i = 0; i < len; i++) value[i] = chars[0 | Math.random() * radix];
  } else {
    let r;
    value[8] = value[13] = value[18] = value[23] = '-';
    value[14] = '4';

    for (i = 0; i < 36; i++) {
      if (!value[i]) {
        r = 0 | Math.random() * 16;
        value[i] = chars[i === 19 ? r & 0x3 | 0x8 : r];
      }
    }
  }

  return value.join('');
}