TDD开发模式

TDD 测试驱动开发

数据效验

// 效验null
function isNull(val) {
    return val === null;
}
// 效验''空字符串
function isEmpty(val) {
    return val === '';
}
// 清除左侧空格
function leftTrim(str) {
    return str.replace(/^\s*/g,"");
}
// 清除左侧空格
function rightTrim(str) {
    return str.replace(/\s*$/g,"");
}
// 清除两侧空格
function Trim(str) {
    return leftTrim(rightTrim(str));
}
function uuid() {
  const s = [];
  const hexDigits = '0123456789abcdef';
  for (let i = 0; i < 36; i += 1) {
    s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
  }
  s[14] = '4'; // bits 12-15 of the time_hi_and_version field to 0010
  s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1); // bits 6-7 of the clock_seq_hi_and_reserved to 01
  s[8] = s[13] = s[18] = s[23] = '-';
  const uuid = s.join('');
  return uuid;
};
function getHash(hash) {
  const arr = hash.split('/');
  const fin = arr[arr.length - 1].split('?');
  return fin[0];
};
function getSearch(hash, name) {
  if (hash.split('?')[1]) {
    const arr = hash.split('?')[1].split('&');
    for (let i = 0; i < arr.length; i++) {
      const key = arr[i].split('=')[0];
      const value = arr[i].split('=')[1];
      if (key == name) {
        return value;
      }
    }
  }
  return '';
};