Javascript AngularJS-如何获得唯一值?

Javascript AngularJS-如何获得唯一值?,javascript,angularjs,Javascript,Angularjs,有人能帮我获取Math.random()的唯一值吗?我希望在每个3x3单元格中都有随机数,但到目前为止,我只能得到一个结果(所有5个单元格中的数字相同) script.js: var app = angular.module("myApp", []); app.controller("RandomCtrl", function ($scope){ $scope.showRandom = function () { return Random; }; });

有人能帮我获取
Math.random()
的唯一值吗?我希望在每个3x3单元格中都有随机数,但到目前为止,我只能得到一个结果(所有5个单元格中的数字相同)

script.js:

var app = angular.module("myApp", []);

app.controller("RandomCtrl", function ($scope){
    $scope.showRandom = function () {
        return Random;
    };
});



var Random = Math.floor(Math.random() * 9 + 1);
  <div ng-app="myApp">

            <div ng-controller="RandomCtrl">

                <table>
                    <tr>
                        <td>{{showRandom()}}</td>
                        <td>{{showRandom()}}</td>
                        <td>{{showRandom()}}</td>
                    </tr>
                    <tr>
                        <td>{{showRandom()}}</td>
                        <td>{{showRandom()}}</td>
                        <td>{{showRandom()}}</td>
                    </tr>
                    <tr>
                        <td>{{showRandom()}}</td>
                        <td>{{showRandom()}}</td>
                        <td>{{showRandom()}}</td>
                    </tr>

                </table> 
            </div>
index.html:

var app = angular.module("myApp", []);

app.controller("RandomCtrl", function ($scope){
    $scope.showRandom = function () {
        return Random;
    };
});



var Random = Math.floor(Math.random() * 9 + 1);
  <div ng-app="myApp">

            <div ng-controller="RandomCtrl">

                <table>
                    <tr>
                        <td>{{showRandom()}}</td>
                        <td>{{showRandom()}}</td>
                        <td>{{showRandom()}}</td>
                    </tr>
                    <tr>
                        <td>{{showRandom()}}</td>
                        <td>{{showRandom()}}</td>
                        <td>{{showRandom()}}</td>
                    </tr>
                    <tr>
                        <td>{{showRandom()}}</td>
                        <td>{{showRandom()}}</td>
                        <td>{{showRandom()}}</td>
                    </tr>

                </table> 
            </div>

{{showRandom()}}
{{showRandom()}}
{{showRandom()}}
{{showRandom()}}
{{showRandom()}}
{{showRandom()}}
{{showRandom()}}
{{showRandom()}}
{{showRandom()}}

当应用程序初始化时,您正在全局范围上设置
var Random
,然后每次都返回该实例。每次都需要获得一个新的随机数:

var app = angular.module("myApp", []);

app.controller("RandomCtrl", function ($scope){
    $scope.showRandom = function () {
        return Math.floor(Math.random() * 9 + 1);
    };
});
或者,如果您确实希望在全局作用域上使用
Random
,请将其设为函数,然后调用它:

var app = angular.module("myApp", []);

app.controller("RandomCtrl", function ($scope){
    $scope.showRandom = Random;
});

var Random = function() {
    Math.floor(Math.random() * 9 + 1);
}

使用
$scope.showRandom=function(){return Math.floor(Math.random()*9+1);}