Indexof() is not a function

@togotech wrote:

Hi All,

I am trying to remove an item row from grid. Follwing is my code:
removeBill(bill: any){
let index = this.bills.indexOf(bill);
if (index > -1){
this.bills.splice(index, 1);
}
}

I am getting error as indexOf is not a function... Not sure what I am missing. (HTML has the same function mention). Kindly help

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