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<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.1.5/angular.min.js"></script>
<meta charset=utf-8 />
<title>JS Bin</title>
</head>
<body>
  
<div ng-app="myApp" ng-controller="myCtrl">
  <h3 >Dynamic data binding AngularJS</h3>
  <h4>Inputs</h4>
  <ul>
    <li ng-repeat="(typeKey, typeVal) in inputs">
      <span>{{typeKey}} : </span>
      <ul>
        <li ng-repeat="value in typeVal">
          <label>{{value}}
            <input
              type="checkbox"
              ng-model="x"
              ng-change="setOutput(typeKey, $index, value)"
            >
          </label>
        </li>
      </ul>
    </li>
  </ul>    
   
  <h4>Outputs</h4>
  <ul ng-repeat="(key,value) in inputs">
    <li>{{key}} : {{outputs[key]}}</li>
  </ul>
</div>
  
</body>
</html>
 
​
 
var app = angular.module('myApp', []);
​
app.controller('myCtrl', function($scope) {
  $scope.outputs = {};
  $scope.inputs = {
    'category': ['one','two','three'],
    'color':['blue','green']
  };
  $scope.setOutput = function(typeKey, $index, value) {
    $scope.outputs[typeKey] = $scope.outputs[typeKey] || [];
    $scope.outputs[typeKey][$index] = value;
  };
});
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