angularjs – ng-repeat angular中的shuffle数组
发布时间:2020-12-17 18:02:12 所属栏目:安全 来源:网络整理
导读:我正在创建一个测验,每次我开始测验时我想要改变问题,这样他们每次都不会出现在同一个顺序中. 我在我的HTML代码中有这个: div ng-repeat="question in questions | filter:ids | orderBy:randomSort" div id="question"{{question.question}}/divimg id="ne
我正在创建一个测验,每次我开始测验时我想要改变问题,这样他们每次都不会出现在同一个顺序中.
我在我的HTML代码中有这个: <div ng-repeat="question in questions | filter:ids | orderBy:randomSort"> <div id="question">{{question.question}}</div><img id="nextImg" ng-src="../app/img/next.png" ng-click="next()" /> <img class="quizImg" ng-hide="{{question.image}}==null" ng-src="{{question.image}}" /> <div class="answer" ng-repeat="answer in question.answers"> <input type="radio" ng-click="checked(answer)">{{answer.answer}} </div> <!--input id="nextQuestion" type="button" ng-click="next()" value="{{buttonText}}"--> </div> 这在我的控制器中 lycheeControllers.controller('quizCtrl',['$scope','$http',function ($scope,$http) { $http.get('json/questions.json').success(function (data) { //all questions $scope.questions = data; $scope.titel = "Check your knowledge about lychees" $scope.randomSort = function(question) { return Math.random(); }; //filter for getting answers / question $scope.ids = function (question) { return question.id == number; } $scope.find = function (id) { if (id == number) { return true; } } $scope.next = function () { if (!(number == (data.length))) { //questionId++; number++; if (correct == true) { points++; } //alert(points); } else { if (!end) { if (correct == true) { points++; end = true; } } alert("Quiz finished: your total score is: " + points); } correct = false; } $scope.checked = function (answer) { //alert(answer.answer); if (answer.correct == "yes") { correct = true; } else { correct = false; } //alert(correct); } }); }]) ; 不幸的是,这根本不起作用.希望有人可以帮助我这个吗? 解决方法
Thx到
http://bost.ocks.org/mike/shuffle/
使用这个改组功能: 与它相关的是,输入数组保持可绑定,因为混洗不会创建新数组,而是在同一引用上进行混洗. // -> Fisher–Yates shuffle algorithm var shuffleArray = function(array) { var m = array.length,t,i; // While there remain elements to shuffle while (m) { // Pick a remaining element… i = Math.floor(Math.random() * m--); // And swap it with the current element. t = array[m]; array[m] = array[i]; array[i] = t; } return array; } 旁注:lodash的_.shuffle(数组)也不起作用,因为它们正在创建一个破坏绑定的新数组(因此一个混洗数组不会触发模型变脏) 要完成工作解决方案的答案,请执行以下步骤: >复制该功能,以便您可以在控制器内使用它. ???? $http.get('json/questions.json').success(function (data) { //all questions $scope.questions = data; shuffleArray($scope.questions); ... } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |