Upload image task

[imkri]

Hi everyone

I am currently planning an experiment in jsPsych with two stages: In stage one the participant will fill out some questionnaires and then get a task where they have to take a picture of a specific object. In stage two, the participant will go to another link, write in a participant code and upload the picture.

Stage one is no problem. But stage two is challenging to program. One challenge is to program an upload image function, which I guess I would have to do in javascript. At the same time, I would need to program something serve side to save the images.

Any advice for programming a upload-image function and making it compatible with jsPsych framework? I am a bit unsure how to make pure javascript code fit into the jsPsych timeline. And how would one go about programming a save image code server side?