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CODE EXAMPLE FOR JAVASCRIPT

angularjs Separate values in select containing 2 object

function ctrl($scope) {
  $scope.options = [{
      name: "A",
      options: ["A1", "A2"]
    },
    {
      name: "B",
      options: ["B1", "B2"]
    },
  ];

  $scope.parseSelection = function() {
    const selected = {};
    
    // Loop over the selected options and check from which group they came
    $scope.rawSelected.forEach((value) => {
      $scope.options.forEach(({ name, options }) => {
        if (options.includes(value)) {
          // The option comes from the current group
          if (!selected[name]) {
            selected[name] = [];
          }
          selected[name].push(value);
        }
      });
    });
    $scope.selected = selected;
  };
}

angular.module("app", [])
  .controller("ctrl", ctrl)
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.7.5/angular.js"></script>


<div ng-app="app" ng-controller="ctrl">
  <select multiple ng-model="rawSelected" ng-change="parseSelection()">
    <optgroup ng-repeat="group in options" label="group.name">
      <option ng-repeat="option in group.options">{{option}}</option>
    </optgroup>
  </select>
  {{rawSelected}} - {{selected}}
</div>
 
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Tagged: #angularjs #Separate #values #select #object
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