let fireKeyEvent = (domId, evtType, keyCode, scp) => {
  ////iframe window
  let win = domId
    ? document.getElementById(domId + "-iframe").contentWindow.window
    : window;
  let doc = domId
    ? document.getElementById(domId + "-iframe").contentWindow.document
    : document;
  //浏览器版本
  let network = navigator.userAgent.toLowerCase();

  let evtObj = null;
  if (doc.createEvent) {
    if (win.KeyboardEvent) {
      evtObj = doc.createEvent("KeyboardEvent");

      //(const AtomicString& type, bool canBubble, bool cancelable, AbstractView* view,
      //const String &keyIdentifier, unsigned location,
      //bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool altGraphKey)

      evtObj.initKeyboardEvent(
        "keydown",
        true,
        false,
        win,
        "U+005A", //保存密钥的标识符。密钥标识符在附录 A.2“密钥标识符集”中定义。无法识别密钥的实现必须使用密钥标识符"Unidentified"。
        0, //0为主键盘；1为左；2为右；3为数字键盘；4为虚拟键盘；5为手柄；
        false, //ctrl
        false,
        false,
        false,
        false
      );
      doc.dispatchEvent(evtObj);

      console.log("evtObj==", evtObj);
      return;
      Object.defineProperty(evtObj, "keyCode", {
        get: function () {
          return this.keyCodeVal;
        },
      });
      Object.defineProperty(evtObj, "which", {
        get: function () {
          return this.keyCodeVal;
        },
      });
      if ((keyCode === 90 || keyCode === 17) && scp) {
        evtObj.initKeyboardEvent(
          evtType, //this will be one of keydown, keypress, or keyup
          true, //事件是否可以冒泡
          false, //Whether or not the event can be canceled
          win, //在WindowProxy与之关联
          false, //
          false, //此处设置了 altKey
          true, //此处设置了ctrlKey
          false, //此处设置了shiftKey,IE中无效。。。
          keyCode,
          0
        );
        console.log("evtObj==", evtObj);
        evtObj.keyCodeVal = keyCode;
        //evtObj.shiftKey = true;
      } else {
        if (network.indexOf("trident") > -1) {
          //ie处理-_-，少参数报错。。
          evtObj.initKeyboardEvent(
            evtType,
            true,
            false,
            win,
            false,
            false,
            false,
            false,
            keyCode,
            0
          );
          evtObj.keyCodeVal = keyCode;
        } else {
          evtObj.initKeyboardEvent(evtType, true, true, win, 1);
          evtObj.keyCodeVal = keyCode;
        }
      }
      if (evtObj.keyCode !== keyCode) {
        console.log(
          "keyCode " + evtObj.keyCode + " 和 (" + evtObj.which + ") 不匹配"
        );
      }
    } else {
      evtObj = doc.createEvent("UIEvents");
      Object.defineProperty(evtObj, "keyCode", {
        get: function () {
          return this.keyCodeVal;
        },
      });
      Object.defineProperty(evtObj, "which", {
        get: function () {
          return this.keyCodeVal;
        },
      });
      evtObj.initUIEvent(evtType, true, true, win, 1);
      evtObj.keyCodeVal = keyCode;
      if (evtObj.keyCode !== keyCode) {
        console.log(
          "keyCode " + evtObj.keyCode + " 和 (" + evtObj.which + ") 不匹配"
        );
      }
    }
    doc.dispatchEvent(evtObj);
  } else if (doc.createEventObject) {
    evtObj = doc.createEventObject();
    evtObj.keyCode = keyCode;
    doc.fireEvent("on" + evtType, evtObj);
  }
};

const imitateKeyboardEvent = (domId) => {
  // fireKeyEvent(domId, "keydown", 17, true);
  fireKeyEvent(domId, "keydown", 90, true);
};

export default imitateKeyboardEvent;