然后，屬性在void類型上不存在，打字稿錯誤

Question

碼：

 reset(){
  let alert = this.AlertCtrl.create({
    buttons :['ok']
  });
  this.userservice.passwordreset(this.email).then((res: any)=>{
    if(res.success){
      alert.setTitle('Email sent');
      alert.setSubTitle('please follow the instructions in the email to reset the password')

    }
    else{
      alert.setTitle('failed');
    }
  })
}

錯誤：

然后，屬性在void類型上不存在，打字稿錯誤

有人可以通過更正此代碼段來幫助我，以便'then'函數起作用！

Answer 1

這里的問題是passwordreset()函數，

它應該看起來像這樣：

passwordreset(): Promise<any> {
  // this should return a promise
  // make sure , you are returning promise from here
  return this.http.get(url)
             .toPromise()
             .then(response => response.json().data)
             .catch(this.handleError);
}

---

您正在返回promise函數中的promise，但沒有從passwordreset()返回它，

請查看您的代碼和更新的代碼，您將了解

您的代碼：

passwordreset(email)
{ 
        var promise = new Promise((resolve,reject)=>{ 
            firebase.auth().sendPasswordResetEmail(email).then(()=>{ 
                            resolve({success :true}); 
                            })
                            .catch((err)=>{ 
                                reject(err); 
                            }) 
                            return promise; 
        }); 
}

更新的代碼：

passwordreset(email): Promise<any>
{ 
        return new Promise((resolve,reject)=>{ 
            firebase.auth().sendPasswordResetEmail(email).then(()=>{ 
                                resolve({success :true}); 
                            })
                            .catch((err)=>{ 
                                reject(err); 
                            }); 
        }); 
}

Answer 2

我使用這個

singlesender(data){

return new Promise((resolve,reject)=>{ 
  this.userService.getAccessToken().then(accesstokendata=>{
    this.accesstoken=accesstokendata;
    console.log(this.accesstoken);
    console.log("hello");

    console.log("hello2");
    let dataToSend = new HttpParams()
      .set("senderidforme", data.senderidforme)  

    let header = new HttpHeaders()
    .set("Content-type", "application/x-www-form-urlencoded")
    .set("Authorization", "Bearer "+this.accesstoken);

      return this.get(SERVER_URL+"web/v2/user-message-unreadcountsignle", dataToSend, header);
  })
  .catch(error=>{

  })


}); 


      }