I am encountering a strange issue. I have an input field and I want to display a button only when the input field has a value. Strangely, it only works when I move the mouse.
<input class="form-control"
type="text"
placeholder="hello there..."
#helloInput
>
{{helloInput.value}} --> does not appear until mouse movement occurs
<button class="btn btn-success"
*ngIf="helloInput.value"
>Show me</button>
This behavior is quite perplexing. Any suggestions?
Angular is able to update the view by triggering change detection. This process usually occurs automatically due to various factors such as Event listeners, XHR requests, setTimeout, and setInterval calls.
In this specific scenario, there seems to be no event listener recognized by Angular. However, since the update is triggered by a mousemove event, it implies that there must be some form of listener in place that Angular has detected.
If you want to ensure that your view updates whenever the input value changes, you can simply add an empty input event listener like so:
<input class="form-control"
type="text"
placeholder="hello there..."
#helloInput
(input)="0" <=============== this one
>
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