Angular directive to format numeric values. Trasform numbers in thousands with "K" and in millions to "M" ( 1000-990000 --> K and 1000000 >= ---> M )

angular_currency_format_directive.js

// HTML
<!-- Directive to Format value to ( Charges CurrencyType )  -->
<format-transaction format-type = "charges" currency-type = "{{currencyType}}" transaction-charge = "{{transactionCharge}}" transaction-limit = "" transaction-period = "" extra-transactions = "" extra-transaction-charge="">

</format-transaction>


// Angular Controller
app.directive('formatTransaction', function() {

    return {
        restrict : 'E',
        scope: {
            formatType : '@',
            currencyType : '@',
            extraTransactions: '@',
            extraTransactionCharge: '@',
            transactionLimit: '@',
            transactionPeriod: '@',
            transactionCharge: '@'
        },
        template: "<span ng-if = \x22formatType == 'charges/transactions' \x22 > {{finalResult}} <br> transactions </span>" +
                  "<span ng-if = \x22formatType == 'transactions/period' \x22> {{finalResult}} </span>" +
                  "<span ng-if = \x22formatType == 'charges' \x22> {{finalResult}} </span>",

        controller: ['$scope', function($scope){
            $scope.etcValue = ""; // Final Extra Transaction Charge value
            $scope.etValue = "";  // Final Extra Transactions value
            $scope.beforeDec = "";
            $scope.afterDec = "";
            $scope.stringValue = "";
            $scope.finalResult = ""; // Final format Result
        
            // If Format-Type is "Charges/Trasactions"
            if($scope.formatType == "charges/transactions" ){
                // Format ExtraTransactionChanrge value to '1000-990000 --> K and 1000000 >= --> M' format
                // Get formated ExtraTransactionChanrge
                $scope.etcValue = formatValue(parseInt($scope.extraTransactionCharge)); // Format Value

                // Format ExtraTransactions value to '1000-990000 --> K and 1000000 >= --> M' format
                // Get formated ExtraTransactions
                $scope.etValue = formatValue(parseInt($scope.extraTransactions)); // Format Value

                // Final formated Transactions field value
                $scope.finalResult = $scope.etcValue +" "+ $scope.currencyType +"/"+ $scope.etValue ;

            }
            // If Format-Type is "Trasactions/Period"
            else if($scope.formatType == "transactions/period" ){
                $scope.finalResult = formatValue(parseInt($scope.transactionLimit)); // Format Value
                $scope.finalResult = $scope.finalResult + "/" + $scope.transactionPeriod;                
            }
            // If Format-Type is "charges" -> ( <Charges> <Currency Type> )
            else if($scope.formatType == "charges" ){
                $scope.finalResult = formatValue(parseInt($scope.transactionCharge)); // Format Value
                $scope.finalResult = $scope.finalResult + " " + $scope.currencyType;
            }


            //**********************************
            //**** Function to Format value ****
            //**********************************

            function formatValue (value){
                $scope.result = "";
                // Format  value to '1000-990000 --> K and 1000000 >= --> M' format
                // If  value is > 999 AND < 1000000 --> 1K - 999.99K
                if(value > 999  && value < 1000000 ){ 
                        
                        // If final value has no decimal value
                        if( (value % 1000) == 0 ){ 
                            $scope.result = (value / 1000).toString() + "K";
                        } 
                        else { // If final value has decimal value
                            $scope.stringValue = (value / 1000).toString() ;
                            $scope.beforeDec = $scope.stringValue.slice(0, $scope.stringValue.indexOf("."));
                            $scope.afterDec =  $scope.stringValue.substr($scope.stringValue.indexOf(".") + 1, 2); // Extract 2 digits post decimal point
                            
                            $scope.result = $scope.beforeDec + "." + $scope.afterDec + "K";
                        }
                }
                // If value is >= 1000000 and beyound --> 1M 
                else if ( value >= 1000000 ){

                     // If final value has no decimal value
                     if((value % 1000000) == 0 ){ 
                        $scope.result = (value / 1000000).toString() + "M";
                    } 
                    else { // If final value has decimal value
                        $scope.stringValue = (value / 1000000).toString() ;
                        $scope.beforeDec = $scope.stringValue.slice(0, $scope.stringValue.indexOf("."));
                        $scope.afterDec =  $scope.stringValue.substr($scope.stringValue.indexOf(".") + 1, 2); // Extract 2 digits post decimal point
                        
                        $scope.result = $scope.beforeDec + "." + $scope.afterDec + "M";
                    }
                }
                else { // If value is < 1000
                    $scope.result = value.toString();
                }

                return $scope.result;
            }
        }]
    }
});

Format numeric values to the following,

• 0 - 999 ---> 0-999
• 1000 - 999999 ---> 1K - 999K
• 1000000 - 10000000 ---> 1M - 10M
• 100000000 - and beyond ---> 10M - xM