When using $mdDialog.prompt, an exception may be thrown, but the function operates smoothly when using confirm

Unfortunately, I encountered a problem with the prompt dialog in my Yo Angular fullstack application.

After researching a solution online, I followed advice to update my Angular version. However, this did not resolve the issue.

$scope.showPrompt = function(ev, ret, value) {
  var confirm = $mdDialog.prompt()
  .title('Edit ' + value)
  .textContent('Enter a new value for: ' + value)
  .placeholder('getValue()')
  .ariaLabel('New ' + value)
  .targetEvent(ev)
  .ok('Accept')
  .cancel('Cancel');
$mdDialog.show(confirm).then(function(result) {
  //setValue(result);
});
};

Every time I attempt to use the function, I encounter an error stating TypeError: $mdDialog.prompt is not a function.

If I modify the dialog to a .confirm and remove the placeholder, it functions correctly.

javascriptangularjsangular-material

Answer №1

Despite the fact that there is an accepted answer already, I found it didn't address my issue so I thought of sharing a different suggestion.

I faced the same problem and realized that the issue was due to using an outdated version of Angular Material that did not yet have the .prompt() feature. By referring to the documentation for version 1.0.5, you can see that the prompt option for dialog was missing in the demo. However, with the latest version (1.1.0 at the time of writing), the prompt option is available.

I hope this information proves helpful to anyone who encounters the same question as I did.

Answer №2

Note: In the world of JavaScript, defining a variable as a function occurs at runtime:

//This snippet will throw an error
getValue();
var getValue = function(){};

It is essential to declare your variable function before calling it:

//Correct way
var getValue = function(){};
getValue();

An alternative approach would be:

//Also correct because code block gets parsed before runtime
getValue();
function getValue(){};

Feel free to check out the updated version on Plunker: https://plnkr.co/edit/YqeyaLqW2B6xn4VHcVlQ?p=preview

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