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https://stackoverflow.com/questions/2745432/best-way-to-detect-that-html5-canvas-is-not-supported
There are two popular methods of detecting canvas support in browsers: Matt's suggestion of checking for the existence of getContext, also used in a similar fashion by the Modernizr library: . var canvasSupported = !!document.createElement("canvas").getContext;
https://bytenota.com/javascript-check-if-a-browser-supports-html5-canvas-or-not/
The below code shows you how to check if a browser supports HTML5 Canvas or not in JavaScript. We simply check the getContext of the Canvas object element.
https://community.canvaslms.com/docs/DOC-10720-which-browsers-does-canvas-support
My recommendation is to (1) make sure you are using the most updated version of your Internet Browser and/or (2) try switching to Chrome or Firefox. If you continue to have problems, make sure to contact your Instructor to let them know and also contact Canvas Support (Help link in Canvas --> Report a Problem). Hope this helps! Kona
http://www.javascriptkit.com/javatutors/createelementcheck.shtml
Check the newly created object for a known property or JavaScript method that should exist if the browser actually supports this element. For INPUT elements, set its TYPE attribute to the target INPUT TYPE you're testing for, and see if the browser retains that value.
https://www.codeproject.com/Questions/164153/Check-if-a-browser-supports-HTML5
Check if a browser supports HTML5. Rate this: ... Can someone show me how to get or even just check if the browser can support some HTML 5. ... Checking for support for the canvas element of HTML 5 var test_canvas = document.createElement("canvas") //try and create sample canvas element var canvascheck=(test_canvas.getContext)? true : false ...
https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API/By_example/Detect_WebGL
Feature-detecting WebGL. In this first example we are going to check whether the browser supports WebGL.To that end we will try to obtain the WebGL rendering context from a canvas element. The WebGL rendering context is an interface, through which you can set and query the state of the graphics machine, send data to the WebGL, and execute draw commands. ...
Nov 04, 2019 · "Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers. The site was built and is maintained by Alexis Deveria, with occasional updates provided by the web development community. The design used as of 2014 was largely created by Lennart Schoors. FAQ
http://www.cwu.edu/online-learning/browser-check
If you pass all checks listed below, you should be able to use the main features of Blackboard/Canvas: JavaScript Check: If this check fails, refer to the Browser's Settings for enabling Javascript for your browser. For instruction on how to enable JavaScript in your browser View here
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