我正在为我的两个 JSON 文件数据执行一些操作，例如添加和删除。
我的要求是我需要添加各自的json名称并在表格中显示它们，然后需要为添加/选择 json 数据对象> 单击生成 json对象button 单击时的 json 名称。它工作正常(我可以在 UI 表格上显示我的 json 名称，并且可以为我的选择/添加获取/生成按钮后的 json 名称数据)。
但是，问题是:生成 json 对象后或单击 Send 按钮后，我可以看到 单击 Send 按钮后，一行在我的 UI 表格上添加了额外内容, 我不需要为我的 UI 表添加额外的行，我只需要我添加的 json 名称，只有那些在单击 Send< 后应该显示在我的表中的内容 按钮。我的两个 json 表发生了这种情况。(我有两个单独的“发送”按钮，一个用于第一个 JSON，另一个用于第二个 JSON)。
我不确定这里出了什么问题？请帮助我在单击按钮时在表中显示所选的 json 名称，其中不应包含使用 AngularJS 或 JavaScript 添加的额外行。先感谢您 !创建Plnkr .
html:
<div>
<p>First Table:</p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Add</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="(key, value) in myFirstJson.Testing">
<td>{{getKey(value)}}</td>
<td><button ng-click="addFirst(value)">Add</button></td>
</tr>
</tbody>
</table>
<br> <br>
<table border="1" class="table">
<thead>
<tr>
<th>Name</th>
<th>Delete</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="(key, value) in firstJsonNames track by $index">
<td>{{getKey(value)}}</td>
<td><button ng-click="deleteFirst($index)">Delete</button></td>
</tr>
<tr ng-hide="firstJsonNames.length > 0">
<td colspan="3">
<p>No Names</p>
</td>
</tr>
</tbody>
</table>
<br>
<br>
<table>
<tbody>
<tr>
<td>First Dropdown:<select ng-model="firstJsonNames.firstdropdown">
<option value="Test1">Test1</option>
<option value="Test2">Test2</option>
<option value="Test3">Test3</option>
</select><br />
</td>
</tr>
<tr>
<td>First Input:<input type="text" maxlength="50" size="50"
ng-model="firstJsonNames.firstInput" /> <br /></td>
</tr>
</tbody>
</table>
<br>
<br>
<button ng-click="generateFirstJson()">Send</button>
<br>
<br><p>Second Table:</p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Add</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="(key, value) in mySecondJson.MyTest">
<td>{{value.Main.static.name}}</td>
<td><button ng-click="addSecond(value.Main.static.name)">Add</button></td>
</tr>
</tbody>
</table>
<br>
<br>
<table border="1" class="table">
<thead>
<tr>
<th>Name</th>
<th>Delete</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="name in secondJsonNames">
<td>{{name}}</td>
<td><button ng-click="deleteSecond(name)">Delete</button></td>
</tr>
<tr ng-hide="mySecondJson.MyTest.length">
<td colspan="3">
<p>No Names</p>
</td>
</tr>
</tbody>
</table>
<br>
<br>
<label>Enter Second Input Data:</label> <input
ng-model="secondJsonNames.SecondInput" placeholder="Input Text"><br>
<br>
<button ng-click="generateSecondJson()">Send</button>
<br>
<br>
</div>
app.js:
var app = angular.module('myApp', ['ui.router']);
app.controller('TestCtrl',function($scope, $http,$state,$stateParams,filterFilter,$rootScope) {
$rootScope.firstJsonNames = [];
$scope.secondJsonNames = [];
$scope.firstJsonNames.firstdropdown="Test1";
$scope.firstJsonNames.firstInput="1.5";
if($rootScope.myFirstJson == undefined)
{
$http.get('test.json').success(function(response) {
$rootScope.myFirstJson = response;
});
}
$scope.addFirst = function (name){
$rootScope.firstJsonNames.push(name);
console.log($rootScope.firstJsonNames);
};
$scope.deleteFirst = function (index){
$rootScope.firstJsonNames.splice(index,1);
};
$scope.getKey = function(item) {
return Object.keys(item)[0];
};
$scope.generateFirstJson = function(){
$rootScope.firstJsonNames.push({firstdropdown:$rootScope.firstJsonNames.firstdropdown, firstInput:$rootScope.firstJsonNames.firstInput});
console.log(angular.toJson($rootScope.firstJsonNames));
};
//second json
if($rootScope.mySecondJson == undefined)
{
$http.get('test1.json').success(function(response) {
$rootScope.mySecondJson = response;
});
}
$scope.addSecond = function (name){
$scope.secondJsonNames.push(name);
console.log($scope.secondJsonNames);
};
$scope.deleteSecond = function (name){
index = $scope.secondJsonNames.indexOf(name);
$scope.secondJsonNames.splice(index,1);
};
$scope.generateSecondJson = function(){
$scope.secondJsonNames.push({SecondInput:$scope.secondJsonNames.SecondInput});
console.log(angular.toJson($scope.secondJsonNames));
};
});
app.config(function($stateProvider, $urlRouterProvider) {
$urlRouterProvider.otherwise('/home');
$stateProvider
.state('home', {
url: '/home',
templateUrl: 'main.html',
controller: 'TestCtrl',
});
});
最佳答案
您正在更新 $rootScope.firstJsonNames 和 $scope.secondJsonNames，它们在 ng-repeat 中使用，因此值显示在表中。使用新变量创建 json。
供您引用:
我用过
$scope.newjson2 = [];
$scope.newjson1 = [];
JS:
var app = angular.module('myApp', ['ui.router']);
app.controller('TestCtrl',function($scope, $http,$state,$stateParams,filterFilter,$rootScope) {
$rootScope.firstJsonNames = [];
$scope.secondJsonNames = [];
$scope.firstJsonNames.firstdropdown="Test1";
$scope.firstJsonNames.firstInput="1.5";
$scope.newjson2 = [];
$scope.newjson1 = [];
if($rootScope.myFirstJson == undefined)
{
$http.get('test.json').success(function(response) {
$rootScope.myFirstJson = response;
});
}
$scope.addFirst = function (name){
$rootScope.firstJsonNames.push(name);
console.log($rootScope.firstJsonNames);
};
$scope.deleteFirst = function (index){
$rootScope.firstJsonNames.splice(index,1);
};
$scope.getKey = function(item) {
return Object.keys(item)[0];
};
$scope.generateFirstJson = function(){
$scope.newjson1 = angular.copy($rootScope.firstJsonNames);
$scope.newjson1.push({firstdropdown:$scope.firstJsonNames.firstdropdown, firstInput:$scope.firstJsonNames.firstInput});
console.log(angular.toJson( $scope.newjson1));
};
//second json
if($rootScope.mySecondJson == undefined)
{
$http.get('test1.json').success(function(response) {
$rootScope.mySecondJson = response;
});
}
$scope.addSecond = function (name){
$scope.secondJsonNames.push(name);
console.log($scope.secondJsonNames);
};
$scope.deleteSecond = function (name){
index = $scope.secondJsonNames.indexOf(name);
$scope.secondJsonNames.splice(index,1);
};
$scope.generateSecondJson = function(){
$scope.newjson2 = angular.copy($scope.secondJsonNames);
$scope.newjson2.push({SecondInput:$scope.secondJsonNames.SecondInput});
console.log(angular.toJson($scope.newjson2));
};
});
app.config(function($stateProvider, $urlRouterProvider) {
$urlRouterProvider.otherwise('/home');
$stateProvider
.state('home', {
url: '/home',
templateUrl: 'main.html',
controller: 'TestCtrl',
});
});
关于javascript - 如何使用 AngularJS 或 JavaScript 删除按钮单击时生成的 JSON 的额外添加行？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/40544740/