(ngModelChange) does not fire while remove all values or paste values

问题

(ngModelChange) event does not fire while clear all values from input field by using ctrl+A or paste value

<input pInputText (ngModelChange)="IsElementDataMissingForMultiValue(languages.TranslationValue)"  
[(ngModel)]="languages.TranslationValue" type="text" />

//controller

function Controller()
{
function IsElementDataMissingForMultiValue(value)
{
alert(value)
}
}

The (ngModelChange) event triggering while removing value one by one or adding value one by one. But it does not trigger when removing all values by using Ctrl + A or pasting values by using ctrl+V.

回答1:

It's my mistake.

The problem occurred when I does not assign $event to ngModel object in some event's

This below code does not working

(ngModelChange)="IsElementDataMissingForMultiValue(languages.TranslationValue)"

But the below code working like a charm!.

(ngModelChange)="languages.TranslationValue = $event; 
IsElementDataMissingForMultiValue(languages.TranslationValue)"

I hope this may be helps others.

来源：https://stackoverflow.com/questions/45079840/ngmodelchange-does-not-fire-while-remove-all-values-or-paste-values