有谁用过angularjs，怎么获取一个id的值
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<body onload='test()'>
<div ng-app="myApp" ng-controller="formCtrl">
<input type="text" id='aaaa' ng-model="user.firstName"><br>
<button ng-click="showvalue()">获取</button>
</div>
<script>
function test(){
alert(document.getElementById('aaaa').value);
}
var app = angular.module('myApp', []);
app.controller('formCtrl', function($scope) {
$scope.master = {firstName:"John1", lastName:"Doe"};
$scope.showvalue = function() {
alert($scope.user.firstName);
};
$scope.user = angular.copy($scope.master);
});
</script>
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