使用不带 e 参数的 e.preventDefault 调用 function

Question

I have a function (which has an e parameter) that's fired off in two ways:

1. Submitting a form;

2. By changing between two elements.

I have a e.preventDefault() at the end of the function because, otherwise, the page will reload and the asynchronous event onscreen would be disrupted. This doesn't throw any errors when I call the function using the submit event listener. However, when I try using the change event listener, it shows an error of how e isn't defined, and yet still works. When I add an e , the function refuses to work when called with the change event.

Obviously, I could leave it alone because it still works, but I'd still like to know what to do.

Thank you in advance.

Edit for code:

Event Listeners

searchForm.addEventListener("submit", getWeather);

// For the temperature preference
tempSelectForm.addEventListener("change", () => {
  if (celsius.checked) {
    measurement = true;
    getWeather();
  } else if (fahrenheit.checked) {
    measurement = false;
    getWeather();
  }
});

Function:

function getWeather(e) {
  // Data from the search
  const text = search.value;

  weather
    .generateWeather(text, measurement)
    .then((data) => {
      if (data.cod === "404") {
        console.log("No such city found");
      } else if (data.cod === "400") {
        console.log("No city detected");
      } else {
        console.log(data);
        const placeName = data.name + ", " + data.sys.country;
        const currentTemp = Math.floor(data.main.temp);
        const weatherType = data.weather[0].main;
        const weatherDescription = data.weather[0].description;
        const feelsLike = Math.floor(data.main.feels_like);
        const humidity = data.main.humidity;
        const pressure = data.main.pressure;
        const wind = data.wind.speed;

        ui.showWeather(
          measurement,
          placeName,
          currentTemp,
          weatherType,
          weatherDescription,
          feelsLike,
          humidity,
          pressure,
          wind
        );
      }
    })
    .catch((err) => console.error(err));

  e.preventDefault();
}

Answer 1

You need to pass the event parameter from the event listener to getWeather

tempSelectForm.addEventListener("change", (e) => {
  if (celsius.checked) {
    measurement = true;
    getWeather(e);
  } else if (fahrenheit.checked) {
    measurement = false;
    getWeather(e);
  }
});