Remove duplicate elements from an array using AngularJS
We have given an array and the task is to remove/delete the duplicates from the array using AngularJS.
Approach:
- The approach is to use the filter() method and inside the method, the elements which don’t repeat themselves will be returned and the duplicates will be returned only once.
- Hence, a unique array will be made.
Example 1: In this example, the character ‘g’ and ‘b’ are removed from the original array.
HTML
<!DOCTYPE HTML><html> <head> <script src= </script> <script> var myApp = angular.module("app", []); myApp.controller("controller", function ($scope) { $scope.arr = ['g', 'a', 'b', 'c', 'g', 'b']; $scope.res = []; $scope.remDup = function () { $scope.res = $scope.arr .filter(function (item, pos) { return $scope.arr.indexOf(item) == pos; }) }; }); </script></head> <body style="text-align:center;"> <h1 style="color:green;"> GeeksForGeeks </h1> <p> Remove duplicate elements from the array in AngularJS </p> <div ng-app="app"> <div ng-controller="controller"> Original Array = {{arr}} <br><br> <button ng-click='remDup()'> Click here </button> <br><br> Final Array = {{res}}<br> </div> </div></body> </html> |
Output:
Example 2: This example does the case-sensitive comparison, so the elements like ‘gfg’ and ‘GFG’ will not be considered as duplicates.
HTML
<!DOCTYPE HTML><html> <head> <script src= </script> <script> var myApp = angular.module("app", []); myApp.controller("controller", function ($scope) { $scope.arr = ['gfg', 'GFG', 'Gfg', 'gFG', 'gFg', 'gFg']; $scope.res = []; $scope.remDup = function () { $scope.res = $scope.arr .filter(function (item, pos) { return $scope.arr.indexOf(item) == pos; }) }; }); </script></head> <body style="text-align:center;"> <h1 style="color:green;"> GeeksForGeeks </h1> <p> Remove duplicate elements from the array in AngularJS </p> <div ng-app="app"> <div ng-controller="controller"> Original Array = {{arr}} <br> <br> <button ng-click='remDup()'> Click here </button> <br> <br> Final Array = {{res}}<br> </div> </div></body> </html> |
Output:
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