如何在Angular 4中获取单击按钮的值

Question

I have 4 buttons each with unique value.I am getting undefined in console log with current code.

HTML

<button type="submit" class="parcel-btn weight-option" value="25" (click)="onItemSelector()">
<button type="submit" class="parcel-btn weight-option" value="50" (click)="onItemSelector()">
<button type="submit" class="parcel-btn weight-option" value="250" (click)="onItemSelector()">
<button type="submit" class="parcel-btn weight-option" value="100" (click)="onItemSelector()">

Typescript

onItemSelector() {
  const weightSelector = this.elm.nativeElement.querySelectorAll('.weight-option').value;
  console.log(weightSelector);
}

Answer 1

Try this

Pass the value to the onItemSelector function

   <button type="submit" class="parcel-btn weight-option" (click)="onItemSelector(25)">

Get the value in ts

onItemSelector(value :any) {
console.log(value);
}