过滤对象中为空的属性

/**
 * 过滤对象中为空的属性
 * @param obj
 * @returns {*}
 */
export function filterObj(obj) {
  if (!(typeof obj == 'object')) {
    return
  }

  for (var key in obj) {
    if (obj.hasOwnProperty(key)
      && (obj[key] == null || obj[key] == undefined || obj[key] === '')) {
      delete obj[key]
    }
  }
  return obj
}