jspsych/jsPsych @jspsych/plugin-image-keyboard-response@2.2.0 on GitHub

#3707 a9f454ee58fda69173dbaa1ecfa4aa7797920031 Thanks @jodeleeuw! - Added the ability to measure how long a response key was held down. The getKeyboardResponse() method of the keyboard plugin API gains an optional wait_for_key_release option; when true, the callback_function fires at key release instead of key press, and its payload includes an rt_key_duration field (the press-to-release duration in milliseconds) alongside the usual key and rt. The five *-keyboard-response plugins (html, image, audio, video, canvas) expose a matching wait_for_key_release trial parameter (default false) and record the new rt_key_duration data field. The release is matched to the press by the physical key (KeyboardEvent.code), so changing the shift state while holding a key (which changes e.key) does not prevent the release from being detected, and the key reported to the callback is always the value from the original keydown event. If the window loses focus while a key is held (a blur event), the browser stops delivering the eventual keyup; in that case the pending release is resolved with rt_key_duration: null (the hold duration cannot be measured) and the held-key state is cleared so it does not leak into the next trial.