FormData: entries() method
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since October 2018.
Note: This feature is available in Web Workers.
The FormData.entries() method returns an iterator which iterates through all key/value pairs contained in the FormData. The key of each pair is a string, and the value is either a string or a Blob.
Note:
Unlike Map entries, FormData entries are not necessarily unique by key. A form can contain multiple elements with the same name, so the same key may appear in more than one pair while iterating. To retrieve all values associated with a single key, use the getAll() method (or get() for only the first value).
Syntax
js
entries()
Parameters
None.
Return value
Examples
js
formData.append("key1", "value1");
formData.append("key2", "value2");
// Display the key/value pairs
for (const pair of formData.entries()) {
console.log(pair[0], pair[1]);
}
The result is:
key1 value1 key2 value2
Specifications
| Specification |
|---|
| XMLHttpRequest # interface-formdata |