Error: Trying to access a property that is undefined and unable to perform operation 'split'

This is my HTML code. Whenever I try to run the HTML page, I encounter an error message saying 'Cannot read property 'split' of undefined'

<!DOCTYPE html>
      <html>
            <head>
                <script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.3.3/angular.min.js"></script>

                <script>
                     var appModule=angular.module('appModule',[]);
                     appModule.filter('removeDashes',function(){
                         return function(text){
                             if(text!==undefined){
                                 return text.split('-').join(' ');
                             }
                         }
                     });
                     appModule.controller('someCTRL',function($scope){
                     });
                </script>
             </head>

             <body ng-app="appModule" ng-controller="someCTRL">
            <input type="text" model="someDashedText">
            <p>
                {{someDashedText | removeDashes}}
            </p>
        </body>
    </html>

Answer №1

if(input !== null){
                             return input.split('-').join(' ');
                         }

I believe the initial condition can be simplified as shown below:

if(input){
                             return input.split('-').join(' ');
                         }

This particular check verifies if the input is valid, not a null value, and not an empty string.

I hope this clarifies things for you.

Answer №2

The code

<input type="text" model="someDashedText">
is missing the 'ng' attribute. It should be written as
<input type="text" ng-model="someDashedText">
.

It may not be necessary to use the 'strict not equal' operator !== here. You could simply check if there is any text present using if(text).

You can view a functioning example on Plunker.

Answer №3

I have recently updated my code by creating a separate module for the filter and incorporating it into the 'appModule'.

Make sure to utilize "ng-model" in the input field.

Take a look at the functional script below:

<!DOCTYPE html>
      <html>
            <head>
                <script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.3.3/angular.min.js"></script>
       <script>
                     angular.module('dash',[]).filter('removeDashes',function(){
                         return function(text){
                            if(text!==undefined){
                                 return text.split('-').join(' ');
                             }
                         }
                     });
angular.module('appModule', ['dash']).controller('someCTRL', function($scope){
                     });
                </script>
             </head>

             <body ng-app="appModule" ng-controller="someCTRL">
            <input type="text" ng-model="someDashedText">
            <p>
                {{someDashedText|removeDashes}}
            </p>
        </body>
    </html>

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