如何根据某些条件从对象数组中删除元素

Question

I am facing a critical problem in angular

I have the following arrays

dataArray (3) [21, 21, 23]

and the below is actual Data from API

ViewData = [  
      {  
         "id":5,
         "name":"Private",
         "description":"",

      },
      {  
         "id":7,
         "name":"Semi Private",
         "description":"",

      },
      {  
         "id":8,
         "name":"laboratory",
         "description":"",

      },
      {  
         "id":15,
         "name":"Test",

      },
      {  
         "id":16,
         "name":"Testss",
         "description":null,

      },
      {  
         "id":18,
         "name":"TestSan",
         "description":null,

      },
      {  
         "id":21,
         "name":"TestBBB",
         "description":"test",

      },
      {  
         "id":23,
         "name":"TestOne",
         "description":null,

      },
      {  
         "id":2,
         "name":"Standard ward",
         "description":"",
         "sharing":4,
         "set_value":2
      }
   ]

I have to process ViewData (2nd array) after processing ViewData should not contain JSON Objects which ids are present in dataArray(I mean if the any id of ViewData is equal to id which is in DataArray i want to remove that JSON Object from View Data) (Out put should be like below )

ViewData = [  
      {  
         "id":5,
         "name":"Private",
         "description":"",

      },
      {  
         "id":7,
         "name":"Semi Private",
         "description":"",

      },
      {  
         "id":8,
         "name":"laboratory",
         "description":"",

      },
      {  
         "id":15,
         "name":"Test",

      },
      {  
         "id":16,
         "name":"Testss",
         "description":null,

      },
      {  
         "id":18,
         "name":"TestSan",
         "description":null,

      },

      {  
         "id":2,
         "name":"Standard ward",
         "description":"",
         "sharing":4,
         "set_value":2
      }
   ]

Answer 1

you can make use of filter() and includes() method for this

const arryids = {1,3,9};//remove id array 
const filteredarray = this.ViewData.filter(d=> !array.includes(d.id));
this.ViewData= filteredarray;

Answer 2

使用filter

ViewData = ViewData.filter( s => !dataArray.includes( s.id ) ) 

Answer 3

Using filter with combination includes . filter will return a new array based on the condition. Those items for which the condition returns true, will be added in the output array.

 const ids = [21, 23]; const viewData = [ { "id":5, "name":"Private", "description":"", }, { "id":7, "name":"Semi Private", "description":"", }, { "id":8, "name":"laboratory", "description":"", }, { "id":15, "name":"Test", }, { "id":16, "name":"Testss", "description":null, }, { "id":18, "name":"TestSan", "description":null, }, { "id":21, "name":"TestBBB", "description":"test", }, { "id":23, "name":"TestOne", "description":null, }, { "id":2, "name":"Standard ward", "description":"", "sharing":4, "set_value":2 } ]; const filteredData = viewData.filter(item => !ids.includes(item.id)); console.log(filteredData); 

Answer 4

if(condition){
var key = "your_key";
delete json[key];
}