javascript - 在 angularjs ngDialog.openConfirm 对话框出现在整个函数执行后

Question

在 angularjs 中，我想显示删除操作的确认对话框，我的代码如下:

function deleteOperation(){
    var result;        
             ngDialog.openConfirm({
                    template:
                        '<p>Are you sure you want to delete selected conversation(s) ?</p>' +
                        '<div>' +
                          '<button type="button" class="btn btn-default" ng-click="closeThisDialog(0)">No&nbsp;' +
                          '<button type="button" class="btn btn-primary" ng-click="confirm(1)">Yes' +
                        '</button></div>',
                    plain: true,
                    className: 'ngdialog-theme-default'
                }).then(function (value) {
                    result=true;
                }, function (value) {
                    result=false;
                });

            if (result == true) {
                // perform delete operation
 }
}

但是对话框是在整个函数执行完之后才显示的，所以在if条件结果变量得到未定义的值

Answer 1

回调是异步的。因此，您必须像这样在成功回调中执行您的操作:

function deleteOperation(){     
             ngDialog.openConfirm({
                    template:
                        '<p>Are you sure you want to delete selected conversation(s) ?</p>' +
                        '<div>' +
                          '<button type="button" class="btn btn-default" ng-click="closeThisDialog(0)">No&nbsp;' +
                          '<button type="button" class="btn btn-primary" ng-click="confirm(1)">Yes' +
                        '</button></div>',
                    plain: true,
                    className: 'ngdialog-theme-default'
                }).then(function (value) {
                    // perform delete operation
                }, function (value) {
                    //Do something 
                });
    }