FormDataEvent: formData-Eigenschaft
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Die schreibgeschützte formData
-Eigenschaft des FormDataEvent
-Interfaces enthält das FormData
-Objekt, das die Daten darstellt, die im Formular enthalten sind, als das Ereignis ausgelöst wurde.
Wert
Ein FormData
-Objekt.
Beispiele
js
// grab reference to form
const formElem = document.querySelector("form");
// submit handler
formElem.addEventListener("submit", (e) => {
// on form submission, prevent default
e.preventDefault();
// construct a FormData object, which fires the formdata event
new FormData(formElem);
});
// formdata handler to retrieve data
formElem.addEventListener("formdata", (e) => {
console.log("formdata fired");
// Get the form data from the event object
let data = e.formData;
for (const value of data.values()) {
console.log(value);
}
// submit the data via XHR
const request = new XMLHttpRequest();
request.open("POST", "/formHandler");
request.send(data);
});
Spezifikationen
Specification |
---|
HTML Standard # the-formdataevent-interface:dom-formdataevent-formdata-2 |
Browser-Kompatibilität
BCD tables only load in the browser