What are the events called in Angular 2 when a radio button is selected or unselected?
Is it something like this:
<input type="radio" (select)="selected()" (unselect)="unselected()" />
When I click on a radio button in a group, will it trigger selected() for the new selection and unselected() for the previous selection?
Success!
<input type="radio" (change)="handleChange($event)" />
However, in order to determine whether an option is 'selected' or 'unselected', you will need additional code.
You can experiment with the following in your *.ts file:
export class Comp {
private _prevSelected: any;
handleChange(evt) {
var target = evt.target;
if (target.checked) {
doSelected(target);
this._prevSelected = target;
} else {
doUnSelected(this._prevSelected)
}
}
}
This is an example of HTML code structure:
<div *ngFor = " let displayParameter of displayParameters" >
<!-- <li><a href="#">{{displayParameter}}</a></li> -->
<!-- <input type="radio" name="displayParameter" (change) ="handleChange(event)")> -->
<h5><input type="radio" name="radiogroup" (change)="handleChange(displayParameter)" [checked]="(idx === 0)" >{{displayParameter}} </h5>
</div>
In this case, the corresponding script is as follows:
handleChange(evt){
this.displayParameter = evt;
console.log(evt);
}
Success comes from assigning the click event to the label, not the input.
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