input array name [] script 중복 처리

                var receive_tel_array = new Array();

                for (let i = 0; i <=index_data; i++) {
                    if($(\"input[name='receive_tel[]']\").eq(i).val()!=''){
                       tel=$(\"input[name='receive_tel[]']\").eq(i).val();
                       receive_tel_array.push(tel);
                       if (receive_tel_array.indexOf(receive_tel_array[i]) === receive_tel_array.lastIndexOf(receive_tel_array[i])) {
//                         console.log('중복x');
                       }
                       else{
//                         console.log('중복');
                           alert('중복되었습니다.');
                           $(\"input[name='receive_tel[]']\").eq(i).focus();
                           return false;
                       }
                    }
                }

<td><input type="text" class="phone-number-check" name="receive_tel[]"></td>
<td><input type="text" class="phone-number-check" name="receive_tel[]"></td>
<td><input type="text" class="phone-number-check" name="receive_tel[]"></td>
<td><input type="text" class="phone-number-check" name="receive_tel[]"></td>
<td><input type="text" class="phone-number-check" name="receive_tel[]"></td>