Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Use BluetoothRemoteGATTCharacteristic.writeValueWithResponse() and BluetoothRemoteGATTCharacteristic.writeValueWithoutResponse() instead.
The BluetoothRemoteGATTCharacteristic.writeValue() method sets a BluetoothRemoteGATTCharacteristic object's value property to the bytes contained in a given ArrayBuffer, TypedArray, or DataView, writes the characteristic value with optional response, and returns the resulting Promise.
writeValue(buffer)
valueAn ArrayBuffer, TypedArray, or DataView.
A Promise.
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
writeValue |
56 | 79 | No | 43 | No | 56 | No | 43 | No | 6.0 | No | No |
© 2005–2025 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/BluetoothRemoteGATTCharacteristic/writeValue