<input type="text" ng-model="text1" ng-keyup="enterEvent($event)" />
<button ng-click="clickEvent()">確定按鈕</button>

<script type="text/javascript">
 var app = angular.module('myApp', []).controller('ctrl', function($scope){
    $scope.clickEvent = function() {
     // 響應(yīng)事件
    }
    
 $scope.enterEvent = function(e) {
 var keycode = window.event?e.keyCode:e.which;
   if(keycode==13){
       $scope.clickEvent();
    }
  }
</script>

另外一種寫法

ng-keypress="($event.which === 13)?addTask():0"