问如何在AngularJS中自动大写输入字段中的第一个字符？

EN

myApp.directive('capitalizeFirst', function($parse) {
   return {
     require: 'ngModel',
     link: function(scope, element, attrs, modelCtrl) {
        var capitalize = function(inputValue) {
           if (inputValue === undefined) { inputValue = ''; }
           var capitalized = inputValue.charAt(0).toUpperCase() +
                             inputValue.substring(1);
           if(capitalized !== inputValue) {
              modelCtrl.$setViewValue(capitalized);
              modelCtrl.$render();
            }         
            return capitalized;
         }
         modelCtrl.$parsers.push(capitalize);
         capitalize($parse(attrs.ngModel)(scope)); // capitalize initial value
     }
   };
});

<input type="text" ng-model="obj.name" capitalize-first>

<tr ng-repeat="(key, value) in item">
    <td style="text-transform: capitalize">{{key}}</td>
    <td>{{item}}</td>
</tr>

 <div ng-controller="MyCtrl">
     {{aString | capitalize}} !
</div>

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

myApp.filter('capitalize', function() {
    return function(input, scope) {
        return input.substring(0,1).toUpperCase()+input.substring(1);
    }
});