@beisen-phoenix/lookup/lib/util.js

---

import fetch from '@beisen/platform-fetch';
import isEqual from 'lodash/isEqual';
import isEmpty from 'lodash/isEmpty';
export function callFetch(url, params, succCallBack, errorCallBack) {
  fetch(url, {
    method: 'POST',
    params: params
  }).then(succCallBack, errorCallBack);
} //判断props数据是否改变,无变化返回null,有变化返回json对象

export function getUpdateData(data, now, pre) {
  var ret = {};
  (data || []).map(function (n) {
    if (!isEqual(now[n], pre[n])) {
      ret[n] = now[n];
    }
  });
  return isEmpty(ret) ? null : ret;
} //按弹层高度计算规则，计算弹层的高度

export var calculateModalHeight = function calculateModalHeight(height, diff) {
  return (height || window.innerHeight) * 0.9 - diff;
}; //判断弹窗是否出现滚动条,并返回高度

export var resetCalculateHeight = function resetCalculateHeight(className) {
  var adjustValue = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
  //此判断仅限于lookup嵌入到Modal内的计算
  var mainContainer = document.querySelector(className);
  var mainContainerDiv = mainContainer && mainContainer.parentElement || null;
  var searchFormDiv = mainContainer.querySelector('.phoenix-search-form');

  if (mainContainerDiv) {
    var scrollY = mainContainerDiv.clientHeight - searchFormDiv.clientHeight - adjustValue;

    if (mainContainerDiv.scrollHeight >= mainContainerDiv.clientHeight) {
      return {
        scrollY: scrollY
      };
    }
  }
}; // 对象属性为undefined时返回空

export var getValueUseKey = function getValueUseKey(obj, key) {
  return typeof key === 'undefined' ? '' : obj[key];
};