i'm using onchange to save the value of my input range into firebase , but i have an error who say that my function is not defined.
this is my function
saverange(){
this.Platform.ready().then(() => {
this.rootRef.child("users").child(this.UserID).child('range').set(this.range)
})
}
this is my html
<ion-item>
<ion-row>
<ion-col>Rayon <span favorite><strong> {{range}} km</strong></span></ion-col>
<ion-col><input type="range" name="points" min="0" max="40" [(ngModel)]="range" onchange="saverange()"></ion-col>
</ion-row>
</ion-item>
what is the equivalent of onchange in angular , if one exist. thank you
We can use Angular event bindings to respond to any DOM event. The syntax is simple. We surround the DOM event name in parentheses and assign a quoted template statement to it. -- reference
Since change
is on the list of standard DOM events, we can use it:
(change)="saverange()"
In your particular case, since you're using NgModel, you could break up the two-way binding like this instead:
[ngModel]="range" (ngModelChange)="saverange($event)"
Then
saverange(newValue) {
this.range = newValue;
this.Platform.ready().then(() => {
this.rootRef.child("users").child(this.UserID).child('range').set(this.range)
})
}
However, with this approach saverange()
is called with every keystroke, so you're probably better off using (change)
.