我对 Angular 还很陌生，我做对了。
在下面的示例中，我试图在用户单击相应按钮后显示问题的答案。 在显示答案之前，我想运行一个函数来检查用户是否有权显示答案。在这个例子中，我假设他有权利。
我必须做些什么才能删除单击按钮所在行中的“ng-hide”类。
我感谢任何形式的帮助。 提前致谢
var myApp = angular.module('myApp', []);
myApp.controller('QuestionCtlr', ['$scope', '$log', function($scope, $log) {
$scope.questions = [
["what is 1+1?"],
["what color of the sky"],
["what is the answer to the universe"]
];
$scope.answers = [
2, ["blue, black or orange"],
40
];
$scope.hideme = function(i) {
$log.log("element " + i + " was cicked");
//this will be detemined within a fct, so lets asume the has the according rights
var userPrivilege = true;
if (userPrivilege) {
//HOW TO: show the answer with the index i
}
}
}]);<!DOCTYPE html>
<html lang="en" ng-app="myApp">
<head>
<meta charset="UTF-8">
<!-- angular -->
<script src="https://code.angularjs.org/1.4.0/angular.min.js"></script>
<script src="app.js"></script>
<!-- jquery -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<!-- bootstrap -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" />
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
</head>
<body ng-controller=QuestionCtlr>
<table class="table table-hover">
<thead>
<tr>
<th>Question</th>
<th>Answer</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="q in questions track by $index">
<td>{{q[0]}}</td>
<td class = "ng-hide">{{q[0]}}</td>
<td>
<button type="button" ng-click="hideme($index)" class="btn btn-default">show me</button>
</td>
</tr>
</tbody>
</table>
</body>
</html>最佳答案
这是一个完整的工作示例。
我改变的事情:
- 答案现在存储为每个问题的属性。这使代码更整洁(无需
通过 $index跟踪)。 - ng-show 指令用作属性而不是类，并绑定(bind)到问题的
showAnswers属性。 - 当您单击按钮时，
showme函数将showAnswers属性设置为true。
var myApp = angular.module('myApp', []);
myApp.controller('QuestionCtlr', ['$scope', '$log', function($scope, $log) {
$scope.questions = [
{question: "what is 1+1?", answers: [2]},
{question: "what color of the sky", answers: ["blue", "black", "orange"]},
{question: "what is the answer to the universe", answers: [42]}
];
$scope.showme = function(q) {
$log.log("question " + q.question + " was cicked");
var userPrivilege = true;
if (userPrivilege) {
q.showAnswers = true;
}
}
}]);<!DOCTYPE html>
<html lang="en" ng-app="myApp">
<head>
<meta charset="UTF-8">
<!-- angular -->
<script src="https://code.angularjs.org/1.4.0/angular.min.js"></script>
<script src="app.js"></script>
<!-- jquery -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<!-- bootstrap -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" />
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
</head>
<body ng-controller=QuestionCtlr>
<table class="table table-hover">
<thead>
<tr>
<th>Question</th>
<th colspan="2">Answer</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="q in questions">
<td >{{q.question}}</td>
<td ng-show="q.showAnswers">
<div ng-repeat="a in q.answers">{{a}}</div>
</td>
<td>
<button type="button" ng-click="showme(q)" class="btn btn-default">show me</button>
</td>
</tr>
</tbody>
</table>
</body>
</html>关于javascript - : show or hide element after button click 的 Angular 方式，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31318924/