durandal.js确认框无法返回是或否

Question

我想在durandal.js中添加comfirmationbox

我写了以下代码，但它没有返回Yes或NO

define(['services/logger', 'durandal/plugins/router', 'durandal/app'], function (logger, router, app) {

if (app.showMessage('Are you sure you want to delete :' + titlename + '?', 'Delete Confirmation', ['Yes', 'No'])) {
                DeleteAchievement(self, obj.Soid)
            }

Answer 1

showMessage方法返回一个promise，因此您的代码应如下所示：

app.showMessage('Are you sure you want to delete :' + titlename + '?', 'Delete Confirmation', ['Yes', 'No']).then(function(dialogResult){
    if(dialogResult === "Yes"){
        //Your code
    }
});

您可以在此处获取更多信息：http://durandaljs.com/documentation/Showing-Message-Boxes-And-Modals/

Answer 2

从它所说的here app.showMessage（）返回一个promise，这意味着你必须在解析promise时编写if语句，即（在这种情况下）当用户单击yes或否，对话框已关闭。你的代码（对我有用）就像

app.showMessage('Are you sure you want to delete :' + titlename + '?', 'Delete Confirmation', ['Yes', 'No']).then(function (dialogResult) {
            if(dialogResult == 'Yes'){
                 //this is called if user clicked yes
            }else{
                 //this is called if user clicked no
            }
        });