The FormData.keys() method returns an iterator which iterates through all keys contained in the FormData. The keys are strings.
Note: This method is available in Web Workers.
The FormData.keys() method returns an iterator which iterates through all keys contained in the FormData. The keys are strings.
Note: This method is available in Web Workers.
js
keys()
None.
js
const formData = new FormData(); formData.append("key1", "value1"); formData.append("key2", "value2"); // Display the keys for (const key of formData.keys()) { console.log(key); }
The result is:
key1 key2
No specification data found for api.FormData.keys.
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| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
keys |
50 | 18 | 44 | No | 37 | 11.1 | 50 | 50 | 44 | 37 | 11.3 | 5.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/FormData/keys