数组操作 filter map

删除数组指定key值

1. 数组是在页面定义，不是从api获取：

const arrayData= [{index: 0,is_required: true,name: "vmvdnksl",type: "LONG_TEXT"},{index: 1,is_required: true,name: "dsvnlk",type: "MULTIPLE_SELECTORS"}];

const result = arrayData.map(({type,index,...rest}) => ({...rest}));

console.log(result);

2. 数组格式未知，是从api获取的数据

var arrayData = {
  0: {
       index: 0,
       is_required: true,
       name: "vmvdnksl",
       type: "LONG_TEXT"
     },
  1: {
       index: 1,
       is_required: true,
       name: "dsvnlk",
       type: "MULTIPLE_SELECTORS"
     }
  };
  
  
for (let key in arrayData) {
  delete arrayData[key].index;
  delete arrayData[key].type;
}
  
console.log(arrayData);

 

对比a、b两个数组，将a不在b数组里面的选项push到b数组去

 

a数组：
data1:[
    {id:'1',name: 'POEM > 10', date: '8/16/21', action: '0'},
    {id:'2',name: 'Patient had 4 flare-ups in the last 6 months', date: '8/16/21', action: '1'},
    {id:'3',name: 'BSA > 10', date: '8/16/21', action: '0'},
    {id:'4',name: 'Patient had surgery', date: '8/16/21', action: '0'},
    {id:'5',name: 'Upcoming appointment date is in the past', date: '8/16/21', action: '0'},
    {id:'6',name: 'Patient reported Plaque Psoriasis has slightly worsened', date: '8/16/21', action: '0'}
  ];

b数组：
data2: [
    {id:'7',name: 'POEM > 10', date: '8/16/21', action: '0'},
    {id:'8',name: 'Patient had 4 flare-ups in the last 6 months', date: '8/16/21', action: '1'},
  ];

let filterData=this.data1.filter((item)=>{
        return  this.data2.filter(data=>data['id']==item['id']).length==0
      })
      this.data2.push(...filterData)

 

 

数组二次filter循环

let newArr = []
        this.patientReportDatas.forEach((item) => {
          let res = item['surveyQuestionsResponses'].filter((j) => j['externalQuestionID']=='36770' || j['externalQuestionID']=='36792')
          console.log(res)
          if(res && res.length) {
              item['surveyQuestionsResponses'] = res
              newArr.push(item)
          }
        })