Angular Filtering checkboxes list with watch

Angular Filtering checkboxes list with watch

by Andrew Pougher

HTML

<input type="text" placeholder="filter" ng-model="nameFilter" />
<br /><br />

<div ng-repeat="item in filteredItems">
    <input type="checkbox" ng-model="item.isChecked" />
    {{item.name}}
</div>
<br />

<div>Total Items: {{items.length}}</div>
<div>Filtered Items: {{filteredItems.length}}</div>
<div>Checked Items: {{checkedItems.length}}</div>
<br />

<button ng-click="showCheckedItems()">Show Checked Items</button>

<script>
	/* http://bit.ly/ARP71 */
  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
  })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');

  ga('create', 'UA-4809804-1', 'auto');
  ga('send', 'pageview');
  </script>

JavaScript

var myApp = angular.module('myApp', []);

myApp.controller("myCtrl", function ($scope, $window) {
    $scope.items = [
        { name: "apple" },
        { name: "peach" },
        { name: "pear" },
        { name: "plum" }
    ];
    
$scope.$watch(function () {
    $scope.filteredItems = $scope.$eval("items | filter:{ name: nameFilter }");
    $scope.checkedItems = $scope.$eval("items | filter:{ name: nameFilter, isChecked: true }");
});
    
    $scope.showCheckedItems = function () {
        var checkedNames = $scope.checkedItems.map(function (item) {
            return item.name;
        });
        
        $window.alert(checkedNames);
    };
});