Change_attr about jspsych-psychophysics HOT 3 CLOSED

    const images = [ // All the images used in this demo
        './img/scissors.png',
        './img/pen.png',
        './img/battery.png'
    ];

    const present_stim =  {
        type: 'psychophysics',
        stimuli: [
            {
                obj_type: 'cross', // fixation
                line_length: 20, // pixels
                line_width: 4
            },
            {
                obj_type: 'image',
                file: jsPsych.timelineVariable('fileName'),
                show_start_time: 500 // ms after the start of the trial
            }
        ],
        response_type: 'key',
        choices: ['f', 'j'],
        canvas_height: 500,
        prompt: 'Press the F or J key.',
        data: {'file_name': jsPsych.timelineVariable('fileName')} // for identification
    }

    const feed_back = {
        type: 'image-keyboard-response',
        stimulus: './img/correct.png',
        choices: jsPsych.NO_KEYS,
        trial_duration: 1000,
        on_start(trial){
            console.log(trial)
            const resp = jsPsych.data.getLastTrialData().values()[0].key_press;
            if (jsPsych.pluginAPI.compareKeys(resp, 'j')) {
                console.log('Incorrect!')
                trial.stimulus = './img/incorrect.png'
            }
        }
    }
        
    var trial = {
        timeline: [present_stim, feed_back],
        timeline_variables: [
            {fileName: images[0]},
            {fileName: images[1]},
            {fileName: images[2]}
        ],
        randomize_order: true
    }

    jsPsych.init({
        timeline: [trial],
        preload_images: images, // The image data should be preloaded.
        on_finish: function(){jsPsych.data.displayData();}
    });

    const correct_feed_back = {
        obj_type: 'image',
        file: './img/correct.png'
    }

    const feed_back = {
        type: 'psychophysics',
        stimuli: [correct_feed_back],
        choices: jsPsych.NO_KEYS,
        prompt: 'Feed back.',
        canvas_height: 500,
        trial_duration: 1000,
        on_start(trial){
            const resp = jsPsych.data.getLastTrialData().values()[0].key_press;
            if (jsPsych.pluginAPI.compareKeys(resp, 'j')) {
                console.log('Incorrect!')
                trial.stimuli[0].file = './img/incorrect.png';
            }
        }
    }