Mathematics setNextOperation

mathematics-setnextoperation.js

setNextOperation() {
  let n1 = getRandomNumber(0, this.state.lvl.maxNumber);
  let n2 = getRandomNumber(0, this.state.lvl.maxNumber);
  let operator = this.getRandomOperator();
  let result = CALCULATE(n1, n2, operator);

  // If isn't real number, set the next operation
  if (isNaN(result) || !isFinite(result)) {
    this.setNextOperation();
  } else {
    if (n1 > n2) {
      this.setState({n1, n2});
    } else {
      this.setState({
        n1: n2,
        n2: n1
      });
    }
    this.state.operator = operator;
  }
}