FormData: keys() 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 inWeb Workers.
TheFormData.keys() method returns aniterator which iterates through all keys contained in theFormData. The keys are strings.
Syntax
js
keys()Parameters
None.
Return value
Examples
js
const formData = new FormData();formData.append("key1", "value1");formData.append("key2", "value2");// Display the keysfor (const key of formData.keys()) { console.log(key);}The result is:
key1key2