如何比较这两个函数之间的值？

Question

我想比较这两个函数的variable值。不幸的是，我试图使variablesglobal但我不断得到undefined。

'use strict'; 

/** 
* @ngdoc function 
* @name dashyAppApp.controller:Dashy3Ctrl 
* @description 
* # Dashy3Ctrl 
* Controller of the dashyAppApp 
*/ 

angular.module('dashyAppApp') 
    .controller('Dashy3Ctrl', function ($rootScope, $scope, employees, $interval) { 
    var _this = this; 

    $scope.getData = function() { // getDATA function 
    employees.getEmployees().then(function(response){ 
     _this.items = response.data; 
     $scope.items = _this.items; 

     callmecrazy(response.data); 
    }); 

    }// End getDATA function 
    $scope.getData(); 

    $scope.getDataB = function() { 
    employees.getEmployees().then(function(response){ 
    _this.items = response.data; 
    callmecrazier(response.data); 
    }); 
} 
$interval(function(){ 
$scope.getDataB(); 
}, 10000); 

function callmecrazier(response1){ 
    callmecrazierVal = response1.countries; 
    return callmecrazierVal; 
} 

function callmecrazy(response){ 
    callmecrazyVal = response.countries; 
    return callmecrazyVal; 
} 

if(!angular.equals(callmecrazierVal(), callmecrazyVal())) { 
    //trigger some other function 
    } 
}); 

我想检查是否callmecrazierVal !== callmecrazyVal。这是我上面完整的controller代码。

if(callmecrazierVal !== callmecrazyVal){ 
    //trigger some other function 
} 

Answer 1

如果由函数返回的值是不是基本类型，你应该：

if(!angular.equals(callmecrazier(), callmecrazy()) { 
    //trigger some other function 
} 

编辑 我假设你想以10秒的间隔点击api并检查如果有任何改变，对吧？ （否则，请澄清你想达到的目标）。如果是这样，你需要链接异步调用，然后比较如下：

'use strict'; 

/** 
    * @ngdoc function 
    * @name dashyAppApp.controller:Dashy3Ctrl 
    * @description 
    * # Dashy3Ctrl 
    * Controller of the dashyAppApp 
*/ 

angular.module('dashyAppApp') 
.controller('Dashy3Ctrl', function($rootScope, $scope, employees, $interval)   { 
var _this = this; 

$scope.getData = function() { // getDATA function 
    return employees.getEmployees().then(function(response) { 
     return response.data; 
    }); 

    } // End getDATA function 


$scope.getData() 
.then(function(data1){ 
    $scope.items = data1; 
    $interval(function() { 
    $scope.getData() 
    .then(function(data2){ 
     if (!angular.equals($scope.items, data1) { 
      //trigger some other function 
     } 
    }); 
    }, 10000); 

}); 

}); 

Answer 2

你应该从你的函数中返回一些东西。返回的值将被比较。

function callmecrazier(response1){ 
    var callmecrazierVal = response1.countries; 
    return callmecrazierVal; 
} 

function callmecrazy(response){ 
    var callmecrazyVal = response.countries; 
    return callmecrazyVal; 
} 

然后，像这样对它们进行比较：

if(callmecrazierVal() !== callmecrazyVal()){ 
    //trigger some other function 
} 

Answer 3

function callmecrazier(response1){ 
    var callmecrazierVal = response1.countries; 
    return callmecrazierVal; 
} 

function callmecrazy(response){ 
    var callmecrazyVal = response.countries; 
    return callmecrazyVal; 
} 

if(callmecrazier(response1) !== callmecrazy(response)){ 
    //Your code........... 
}