Assigning Filter Output To Variables

What is assigning filter output to variables and why?

This filter is used to filter an array items using the filter expressions and store in the temporary variable which are used to latter for other purpose.

//The syntax is :

<ul ng-repeat="tempItem in tempItems = {users | filter:username | orderBy: 'age' } ">
    <li>{{tempItem.name | uppercase }}</li>
    <li>{{tempItem.name | lowercase }}</li>
</ul>

//The example detail as given below.

<!DOCTYPE html>
<html>
<head>
    <script src="https://code.angularjs.org/1.4.0-beta.6/angular.js"></script>
    <script>
        var app = angular.module("myApp", []);
        app.controller("MyCtrl", function ($scope) {
            $scope.users = [{
                name: "Anil Singh",
                age: 30
            }, {
                name: "Sunil",
                age: 20
            }, {
                name: "Viru Da",
                age: 40
            }, {
                name: "Aradhya",
                age: 1
            }];
        });
    </script>
</head>
<body ng-app="myApp">
    <div ng-controller="MyCtrl">
        <div class="form-inline">
            <input ng-model="username" type="text" placeholder="Flter key">
        </div>
        <ul ng-repeat="tempItem in tempItems = {users | filter:username | orderBy: 'age' } ">
            <li>{{tempItem.name | uppercase }}</li>
            <li>{{tempItem.name | lowercase }}</li>
        </ul>
    </div>
</body>
</html>

The output as below,

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Hey! I am Anil Singh. I am Active Blogger, Writer and Programmer. I love learning new technologies, programming, blogging and participating the forum discussions more...
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