export interface ChatIm { brokerName: string phone: string brokerId: string brokerImg: string cityId: string houseInfo: string msg: string } export function launchChatActionCallBack(params: ChatIm) { const webViewEnv = getWebViewEnv() if (webViewEnv === WebViewEnv.IOS) { window.launchCardChatCallBack( params.brokerName, params.phone, params.brokerId, params.brokerImg, params.cityId, params.houseInfo, params.msg, ) }else{ wx.miniProgram.navigateTo({ url: `/pages/im/im?bid=${params.brokerId}&cityId=${ params.cityId }&sendWords=communitycheck&wMsg=${encodeURIComponent(params.msg)}`, }) } } 在vue3、ts项目汇总，以上方法 如何添加一个不确定有没有的参数，如果有该参数就传过去和拼在ur上，如果没有就不传

可以在 `params` 中添加一个可选的参数，然后在判断是否存在该参数后进行拼接。例如：

export interface ChatIm { 
  brokerName: string; 
  phone: string; 
  brokerId: string; 
  brokerImg: string; 
  cityId: string; 
  houseInfo: string; 
  msg: string; 
  optionalParam?: string; // 可选参数
}

export function launchChatActionCallBack(params: ChatIm) { 
  const webViewEnv = getWebViewEnv(); 
  if (webViewEnv === WebViewEnv.IOS) { 
    window.launchCardChatCallBack( 
      params.brokerName, 
      params.phone, 
      params.brokerId, 
      params.brokerImg, 
      params.cityId, 
      params.houseInfo, 
      params.msg, 
      params.optionalParam // 如果有可选参数，就拼接
    ); 
  } else { 
    let url = `/pages/im/im?bid=${params.brokerId}&cityId=${params.cityId}&sendWords=communitycheck&wMsg=${encodeURIComponent(params.msg)}`; 
    if (params.optionalParam) { // 如果有可选参数，就拼接
      url += `&optionalParam=${encodeURIComponent(params.optionalParam)}`;
    }
    wx.miniProgram.navigateTo({ url }); 
  } 
}