Making the Call With else if and the Ternary

The main job of Ruth’s script is the call itself: racing, postponed, or canceled, with the reason. The members’ page posts it as a headline such as “Saturday morning race: racing (good racing wind)”. Her first draft looks only at the wind. Strong gusts cancel the race, too little or too much wind postpones it, and anything else means racing.

The JavaScript chain has to make exactly the same call, or the fleet goes out on the wrong morning. You’ll port it, keep its results alive after the last branch, and then pick the headline’s “morning” or “afternoon” with JavaScript’s conditional operator. Start with the chain.

Port the Chain With else if

The Python draft checks the gusts first, then the wind, and sets two names in every branch:

wind_knots = 14
gust_knots = 19

if gust_knots >= 30:
    decision = "cancelled"
    reason = "gusts of 30 knots or more"
elif wind_knots < 6:
    decision = "postponed"
    reason = "too little wind"
elif wind_knots >= 25:
    decision = "postponed"
    reason = "too much wind"
else:
    decision = "racing"
    reason = "good racing wind"

print(f"{decision} ({reason})")

For the main morning, with 14 knots of wind and gusts of 19, it prints racing (good racing wind). The JavaScript port adds two lines with no Python counterpart, let decision; and let reason;:

const windKnots = 14;
const gustKnots = 19;

let decision;
let reason;
if (gustKnots >= 30) {
  decision = "cancelled";
  reason = "gusts of 30 knots or more";
} else if (windKnots < 6) {
  decision = "postponed";
  reason = "too little wind";
} else if (windKnots >= 25) {
  decision = "postponed";
  reason = "too much wind";
} else {
  decision = "racing";
  reason = "good racing wind";
}

console.log(`${decision} (${reason})`);