canvas tainted
跳到 Security and tainted canvases - Because the pixels in a canvas's bitmap can come from a ... A tainted canvas is one which is no longer considered ... , You cannot reset the crossOrigin flag once it is tainted, but if you know before hand what the image is you can convert it to a data url, see ...,I found a way, I'll post it here so hopefully it'll help someone someday. It happened I wasn't messing with the right function in Pixastic's code, as the init() function ... , I had the same issue, and it was solved by adding crossorigin="*" to the video tag.,if (isTainted(ctx)) alert('Sorry, canvas is tainted!'); Edit: NOW i see you wanted a solution without try-catch. Though, this is the proper way to check as there is no ... ,<img id="cat" crossOrigin="Anonymous" width="100" height="80" src="https://c8.staticflickr.com/8/7492/15644563231_4d682b3c88_n.jpg" alt="The Scream">. ,A canvas is considered 'tainted' by a browser if it has loaded images from a different origin that does not set the Access-Control-Allow-Origin header correctly. ,HTML canvas interface implements a series of security related features that ... to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may not be ... , What exactly would that image request URL look like? It need not be anything complicated or abnormal. There are two main ways this could ..., Uncaught DOMException: Failed to execute 'getImageData' on 'CanvasRenderingContext2D': The canvas has been tainted by cross-origin ...
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 canvas tainted 相關參考資料
Allowing cross-origin use of images and canvas - HTML ...
跳到 Security and tainted canvases - Because the pixels in a canvas's bitmap can come from a ... A tainted canvas is one which is no longer considered ... https://developer.mozilla.org Canvas tainted by cross-origin data - Stack Overflow
You cannot reset the crossOrigin flag once it is tainted, but if you know before hand what the image is you can convert it to a data url, see ... https://stackoverflow.com Canvas tainted with CORS images - Stack Overflow
I found a way, I'll post it here so hopefully it'll help someone someday. It happened I wasn't messing with the right function in Pixastic's code, as the init() function ... https://stackoverflow.com How to avoid tainted canvas? - Stack Overflow
I had the same issue, and it was solved by adding crossorigin="*" to the video tag. https://stackoverflow.com How to check, if a canvas element has been tainted? - Stack Overflow
if (isTainted(ctx)) alert('Sorry, canvas is tainted!'); Edit: NOW i see you wanted a solution without try-catch. Though, this is the proper way to check as there is no ... https://stackoverflow.com How to export tainted canvas - JSFiddle - Code Playground
<img id="cat" crossOrigin="Anonymous" width="100" height="80" src="https://c8.staticflickr.com/8/7492/15644563231_4d682b3c88_n.jpg" alt="The S... https://jsfiddle.net HTML Tainted Canvas Limitation - Unblu
A canvas is considered 'tainted' by a browser if it has loaded images from a different origin that does not set the Access-Control-Allow-Origin header correctly. https://www.unblu.com Manipulating cross origin images with HTML canvas - Alberto ...
HTML canvas interface implements a series of security related features that ... to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may not be ... https://medium.com Why is a "tainted canvas" a risk? - Information Security Stack ...
What exactly would that image request URL look like? It need not be anything complicated or abnormal. There are two main ways this could ... https://security.stackexchange 解决canvas图片getImageData,toDataURL跨域问题« 张鑫旭-鑫 ...
Uncaught DOMException: Failed to execute 'getImageData' on 'CanvasRenderingContext2D': The canvas has been tainted by cross-origin ... https://www.zhangxinxu.com |