Question

136

Uploading 'canvas' image data to the server

rated 0 times [ 142] [ 6] / answers: 1 / hits: 64642 / 15 Years ago, mon, october 19, 2009, 12:00:00

I need to upload the canvas image data to the server (database) on the fly, i.e., I need to create a form and with an input=file, and post the image data without any user interaction.

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

diontajm

Add To Favorites

Follow

Total Points: 391

Total Questions: 104

Total Answers: 104

Location: Netherlands

Member since Mon, Jun 7, 2021

3 Years ago

answered 15 Years ago loganl · Accepted Answer

You don't need a file input, just get the data with ctx.getImageData() and post it to the server with Ajax.

See the MDN Documentation for CanvasRenderingContext2D.getImageData().

But you won't be able to get the image data in IE, even with ExCanvas.