/TypeScript/Remove duplicate objects based on id from array angular 8

Remove duplicate objects based on id from array angular 8

this.item = this.item.filter((el, i, a) => i === a.indexOf(el))

How to remove duplicate array object in javascript

var arrayWithDuplicates = [
    {"type":"LICENSE", "licenseNum": "12345", state:"NV"},
    {"type":"LICENSE", "licenseNum": "A7846", state:"CA"},
    {"type":"LICENSE", "licenseNum": "12345", state:"OR"},
    {"type":"LICENSE", "licenseNum": "10849", state:"CA"},
    {"type":"LICENSE", "licenseNum": "B7037", state:"WA"},
    {"type":"LICENSE", "licenseNum": "12345", state:"NM"}
];

function removeDuplicates(originalArray, prop) {
     var newArray = [];
     var lookupObject  = {};

     for(var i in originalArray) {
        lookupObject[originalArray[i][prop]] = originalArray[i];
     }

     for(i in lookupObject) {
         newArray.push(lookupObject[i]);
     }
      return newArray;
 }

var uniqueArray = removeDuplicates(arrayWithDuplicates, "licenseNum");
console.log("uniqueArray is: " + JSON.stringify(uniqueArray));

Source: stackoverflow.com

Remove duplicate objects based on id from array angular 8

function getUnique(arr, comp) {

                    // store the comparison  values in array
   const unique =  arr.map(e => e[comp])

                  // store the indexes of the unique objects
                  .map((e, i, final) => final.indexOf(e) === i && i)

                  // eliminate the false indexes & return unique objects
                 .filter((e) => arr[e]).map(e => arr[e]);

   return unique;
}

console.log(getUnique(arr,'id'));

Source: reactgo.com

Similar codes

0 vote210 views2 answers
File_get_contents url fail
TypeScript
0 vote218 views1 answer
Mac book join raspberry pi webserver
TypeScript
0 vote212 views1 answer
Whats a typedef in c++
TypeScript
0 vote202 views1 answer
How to disable form control but keep value
TypeScript
0 vote191 views1 answer
Common child hackerrank solution
TypeScript
0 vote176 views1 answer
Positional arguments dart
TypeScript
0 vote203 views1 answer
Error: running homebrew as root is extremely dangerous and no longer supported. as homebrew does not drop privileges on installation you would be giving all build scripts full access to your system.
TypeScript
0 vote205 views1 answer
Servlets meaning
TypeScript
0 vote229 views1 answer
Restaurants near me
TypeScript
0 vote200 views1 answer
Do feral cats have rabies?
TypeScript