提示框如果條件匹配角js

我正在寫一個簡單的角度js應用程序。但我很新的角js。提示框如果條件匹配角js

應用程序要求的答案爲2號

我想，當按鈕「檢查」被點擊時，函數應該檢查如果答案是正確的乘法。如果回答錯誤，只有它應該顯示警報消息。

如何使用角度js來做到這一點？

var app = angular.module('myApp', []); 
 
app.controller('myCtrl', function($scope, $window) { 
 
    $scope.firstname = "John"; 
 
    $scope.showTable = false; 
 
    $scope.changeName = function() { 
 
    $scope.firstname = $scope.table; 
 
    } 
 

 
    $scope.generateRandomNumber = function() { 
 
    $scope.Rn = Math.floor(Math.random() * 31); 
 
    $scope.showTable = true; 
 
    } 
 

 
    $checkAnswer = function() { 
 
    //if ($scope.Rn * $scope.table == $scope.answer) 
 
    $window.alert("Right!"); 
 
    // return; 
 
    } 
 

 
    $scope.randomNumber = function() { 
 
    $scope.firstname = Math.floor(Math.random() * 31); 
 
    } 
 
});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script> 
 
<!DOCTYPE html> 
 
<html> 
 

 
<body> 
 
    <div ng-app="myApp" ng-controller="myCtrl"> 
 
    <label> 
 
     Enter the table you want to practice : 
 
    </label> 
 
    <input type="text" ng-model="table" /> 
 
    <button ng-click="generateRandomNumber()"> 
 
     Start</button> 
 
    <h1 ng-show="showTable"> 
 
      {{table}} * {{Rn}} = 
 
      <input type="text" ng-model="answer" /> 
 
      <button ng-click="checkAnswer()"> 
 
       Check</button></h1> 
 

 
    </div> 
 

 
</body> 
 

 
</html>

來源

2016-12-05 Dhanashree

你在你的代碼中的錯字。你應該這樣寫：

$scope.checkAnswer = function() { 
    //if ($scope.Rn * $scope.table == $scope.answer) 
    $window.alert("Right!"); 
    // return; 
    }

intsead這樣的：

$checkAnswer = function() { 
    //if ($scope.Rn * $scope.table == $scope.answer) 
    $window.alert("Right!"); 
    // return; 
    }

來源

2016-12-05 15:52:08 glovas

感謝@initfail和glovas 。那真是愚蠢！ – Dhanashree

看起來像一個簡單的拼寫錯誤...

$checkAnswer = function() { 
    //if ($scope.Rn * $scope.table == $scope.answer) 
    $window.alert("Right!"); 
    // return; 
    }

應該

$scope.checkAnswer = function() { 
    //if ($scope.Rn * $scope.table == $scope.answer) 
    $window.alert("Right!"); 
    // return; 
    }

來源

2016-12-05 15:52:23

提示框如果條件匹配角js

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