问如何在js "reactnative选择器“中删除重复项
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Stack Overflow用户

提问于 2020-08-11 20:18:06

回答 1查看 27关注 0票数 0

请查找以下数据。下面是我只需要Id:1的数据。有些Id没有值，而有些Id有其他值。

实际数据：

data[
 {Id: 1, Specialization: "General", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/doctor.png", Description: "General", IsActive: true, …}
 {Id: 2, Specialization: "Cardiology", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/heartbeat.png", Description: "Hart Related", IsActive: true, …}
 {Id: 3, Specialization: "Gynaecology", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/nephrology.png", Description: "Gynaecology", IsActive: true, …}
 {Id: 4, Specialization: "Orthopedic", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/mental.png", Description: "Bones", IsActive: true, …}
 {Id: 4, Specialization: "Orthopedic", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/mental.png", Description: "Bones", IsActive: true, …}
 {Id: 1, Specialization: "General", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/doctor.png", Description: "General", IsActive: true, …}
 {Id: 3, Specialization: "Gynaecology", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/nephrology.png", Description: "Gynaecology", IsActive: true, …}
 {Id: 3, Specialization: "Gynaecology", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/nephrology.png", Description: "Gynaecology", IsActive: true, …}
 {Id: 2, Specialization: "Cardiology", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/heartbeat.png", Description: "Hart Related", IsActive: true, …}
]

我需要这样的

data[
{Id: 1, Specialization: "General", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/doctor.png", Description: "General", IsActive: true, …}
{Id: 2, Specialization: "Cardiology", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/heartbeat.png", Description: "Hart Related", IsActive: true, …}
{Id: 3, Specialization: "Gynaecology", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/nephrology.png", Description: "Gynaecology", IsActive: true, …}
 {Id: 4, Specialization: "Orthopedic", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/mental.png", Description: "Bones", IsActive: true, …}
]

picker

react-native

回答 1

Stack Overflow用户

发布于 2020-08-11 20:28:13

您可以像这样尝试：

const data = [
 {Id: 1, Specialization: "General", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/doctor.png", Description: "General", IsActive: true, …}
 {Id: 2, Specialization: "Cardiology", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/heartbeat.png", Description: "Hart Related", IsActive: true, …}
 {Id: 3, Specialization: "Gynaecology", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/nephrology.png", Description: "Gynaecology", IsActive: true, …}
 {Id: 4, Specialization: "Orthopedic", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/mental.png", Description: "Bones", IsActive: true, …}
 {Id: 4, Specialization: "Orthopedic", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/mental.png", Description: "Bones", IsActive: true, …}
 {Id: 1, Specialization: "General", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/doctor.png", Description: "General", IsActive: true, …}
 {Id: 3, Specialization: "Gynaecology", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/nephrology.png", Description: "Gynaecology", IsActive: true, …}
 {Id: 3, Specialization: "Gynaecology", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/nephrology.png", Description: "Gynaecology", IsActive: true, …}
 {Id: 2, Specialization: "Cardiology", ImageUrl: "http://122.175.55.55:8080/storage/loadfile/specialization/heartbeat.png", Description: "Hart Related", IsActive: true, …}
]

const getUniqueData = (data) => {
  const indexes = [];
  const uniqueData = [];
  
  for(let i = 0; i < data.length; i++){
    if(indexes.contains(data[i].id)){
      continue; 
    } else {
      indexes.push(data[i].id);
      uniqueData.push(data[i]);
    }
  }
  
  return uniqueData;
}

const uniqueData = getUniqueData(data);

这当然是一个原始的解决方案。对于这样的情况，您可以尝试使用javascipt集或lodash库。

票数 0

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/63357958

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