angularjs - 如何在angularjs中实现取消按钮以实现编辑功能

Question

我用过编辑按钮。编辑后，我有保存和取消按钮。保存按钮按我的预期工作，但没有取消按钮。
如果我尝试编辑后单击“取消”按钮，则它应显示先前的文本。谁能帮帮我吗
js在这里摆弄http://jsfiddle.net/F7K63/143/

 <tr ng-repeat="item in items">
        <td>
            <span ng-hide="item.editing">{{item.name}} <button  ng-click="editItem(item)">Edit</button></span>
            <input ng-show="item.editing" ng-model="item.name"  autofocus />
            <button ng-show="item.editing" ng-click="doneEditing(item)">Save</button>
             <button ng-show="item.editing" ng-click="Cancel(item)">Cancel</button>
        </td>
    </tr>

Answer 1

复制您要编辑的对象。如果按取消，则替换原点。见fiddle

$scope.editItem = function (item) {
    item.editing = true;
    item.backupName = angular.copy(item.name);
}

$scope.doneEditing = function (item) {
    item.editing = false;
    delete item.backupName;
    //do some background ajax calling for persistence...
};
$scope.Cancel = function (item) {
    item.editing = false;
    item.name = angular.copy(item.backupName);
    delete item.backupName;
};