Within which context? If you need to know which component has
triggered an event, you can use event.currentTarget, as in:

<yourRepeatedComponent click="clickHandler(event)" />

Then in a script block:

function clickHandler(event) {
  var yourComponenet = event.currentTarget;

  // From then you can also get this.parent.getChildAt(n)
  // to get the other components
}

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