為什么我的范圍函數沒有從模型傳遞數據？

Question

我有一個簡單的角度應用程序，要求用戶提供名字和姓氏，但是由於某種原因，我的changeBothNames（）函數未獲得使用新值傳遞給它的firstName和lastName模型。

這是我目前的應用程序：

 var app = angular.module("myApp", []); app.controller("mainCtrl", ["$scope", function($scope) { $scope.message = "hello"; $scope.firstName = ""; $scope.lastName = ""; $scope.fullName = $scope.firstName + " " + $scope.lastName; $scope.updateName = function() { $scope.fullName = $scope.firstName + " " + $scope.lastName; } $scope.changeBothNames = function(first, second) { alert("aye", first, second); $scope.firstName = first; $scope.lastName = second; $scope.updateName(); } } ]); 

 [ng-app="myApp"] [ng-controller="mainCtrl"] { max-width: 750px; margin: 50px auto 0 auto; display: -webkit-box; display: -webkit-flex; display: -ms-flexbox; display: flex; -webkit-box-pack: center; -webkit-justify-content: center; -ms-flex-pack: center; justify-content: center; -webkit-box-orient: vertical; -webkit-box-direction: normal; -webkit-flex-direction: column; -ms-flex-direction: column; flex-direction: column; } [ng-app="myApp"] [ng-controller="mainCtrl"] [ng-model="firstName"], [ng-app="myApp"] [ng-controller="mainCtrl"] [ng-model="lastName"] { padding: 5px; border: 0; border-bottom: 1px solid #ccc; margin-right: 10px; outline: 0; } [ng-app="myApp"] [ng-controller="mainCtrl"] [ng-click="changeBothNames(firstName, lastName)"] { border: 0; color: ghostwhite; padding: 15px; font-weight: 700; background-image: -webkit-linear-gradient(top, #00B6FF, #002D40); background-image: linear-gradient(to bottom, #00B6FF, #002D40); -webkit-transition: all .25s ease-in-out; transition: all .25s ease-in-out; } [ng-app="myApp"] [ng-controller="mainCtrl"] [ng-click="changeBothNames(firstName, lastName)"]:hover { -webkit-transform: translateY(-2px); transform: translateY(-2px); box-shadow: 0 5px 2px black; } [ng-app="myApp"] [ng-controller="mainCtrl"] [id="output"] [id="greeting"] { font-weight: 700; text-transform: capitalize; font-size: 24px; } 

 <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script> <div ng-app="myApp"> <div ng-controller="mainCtrl"> <div class="row"> <input ng-model="firstName" placeholder="Enter a first name"> <input ng-model="lastName" placeholder="Enter a last name"> <button ng-click="changeBothNames(firstName, lastName)">Update Name</button> </div> <div class="row"> <div id="output" ng-if="fullName = ' ' "> <div id="greeting">{{firstName}} {{lastName}}</div> </div> <div id="output" ng-if="fullName != ' ' "> <div id="greeting">{{message}}</div>{{fullName}} </div> </div> </div> 

該模型顯然正在更新，因為您可以在屏幕上看到輸出，但是由於某種原因，它沒有正確傳遞，有什么想法嗎？

Answer 1

傳遞值，但alert僅采用一個參數。 將其更改為console.log ，您將看到。

 var app = angular.module("myApp", []); app.controller("mainCtrl", ["$scope", function($scope) { $scope.message = "hello"; $scope.firstName = ""; $scope.lastName = ""; $scope.fullName = $scope.firstName + " " + $scope.lastName; $scope.updateName = function() { $scope.fullName = $scope.firstName + " " + $scope.lastName; } $scope.changeBothNames = function(first, second) { console.log("aye", first, second); document.getElementById('message').innerHTML = first + ' ' + second; $scope.firstName = first; $scope.lastName = second; $scope.updateName(); } } ]); 

 [ng-app="myApp"] [ng-controller="mainCtrl"] { max-width: 750px; margin: 50px auto 0 auto; display: -webkit-box; display: -webkit-flex; display: -ms-flexbox; display: flex; -webkit-box-pack: center; -webkit-justify-content: center; -ms-flex-pack: center; justify-content: center; -webkit-box-orient: vertical; -webkit-box-direction: normal; -webkit-flex-direction: column; -ms-flex-direction: column; flex-direction: column; } [ng-app="myApp"] [ng-controller="mainCtrl"] [ng-model="firstName"], [ng-app="myApp"] [ng-controller="mainCtrl"] [ng-model="lastName"] { padding: 5px; border: 0; border-bottom: 1px solid #ccc; margin-right: 10px; outline: 0; } [ng-app="myApp"] [ng-controller="mainCtrl"] [ng-click="changeBothNames(firstName, lastName)"] { border: 0; color: ghostwhite; padding: 15px; font-weight: 700; background-image: -webkit-linear-gradient(top, #00B6FF, #002D40); background-image: linear-gradient(to bottom, #00B6FF, #002D40); -webkit-transition: all .25s ease-in-out; transition: all .25s ease-in-out; } [ng-app="myApp"] [ng-controller="mainCtrl"] [ng-click="changeBothNames(firstName, lastName)"]:hover { -webkit-transform: translateY(-2px); transform: translateY(-2px); box-shadow: 0 5px 2px black; } [ng-app="myApp"] [ng-controller="mainCtrl"] [id="output"] [id="greeting"] { font-weight: 700; text-transform: capitalize; font-size: 24px; } 

 <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script> <div ng-app="myApp"> <div ng-controller="mainCtrl"> <div class="row"> <input ng-model="firstName" placeholder="Enter a first name"> <input ng-model="lastName" placeholder="Enter a last name"> <button ng-click="changeBothNames(firstName, lastName)">Update Name</button> </div> <div class="row"> <div id="output" ng-if="fullName == ' ' "> <div id="greeting">{{firstName}} {{lastName}}</div> </div> <div id="output" ng-if="fullName != ' ' "> <div id="greeting">{{message}}</div>{{fullName}} </div> </div> </div> <pre id="message"></pre>