How to remove Array duplicates in typescript

Question

I have an array of HTMLElements. I want to remove the duplicates

const element = event.target as HTMLElement;

if (element.classList.contains('singleRowPath')) {
  const gEle = element.closest('g');

  for (let i = 0; i <= this.selectedRowFromMultiSeats.length; i++) {
    if (this.selectedRowFromMultiSeats[i] !== gEle) {
      this.selectedRowFromMultiSeats.push(gEle);
    }
  }

console.error(this.selectedRowFromMultiSeats);

Answer 1

Standard way using filter,

let uniqueElements = selectedRowFromMultiSeats.filter((v, i, a) => a.indexOf(v) === i);

Using set,

let uniqueElements = [...new Set(selectedRowFromMultiSeats)];

Answer 2

You can uses Set,which will be much convenient approach and will give you unique elements in an array let uniqueElements = [...new Set(selectedRowFromMultiSeats)];