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Test javascript online4/21/2023 The language attribute should always be set to simply "JavaScript", or omitted entirely, since at this stage its usefulness is fast approaching zero. Of course, on this side of the infamous browser wars this method of detection is next to useless, as in their rush to support things, the two main browsers didn't give a second thought to supporting the same things and so JavaScript 1.2, for example, doesn't refer to any one standard. When you haveĪny browser that doesn't support JavaScript 1.2 methods was supposed to bypass this whole block of code. If it isn't, the browser will not be given the advanced code.Īs a side note, the original plan for object detection was that it would be achieved using the language attribute of the script tag. ![]() This is where object detection comes in - you can write a simple if () statement to check if a certain object, method, array or property that you need is supported. While it seems logical to simply do a check on which browser the reader is using through the navigator object and base your coding on that, there are too many obstacles in the way for this to be of much use (more on that below). Advanced scripts will therefore die a death in old versions of most browsers, and even some of the current generation. ![]() If you're going to be using JavaScript in any capacity you will soon find out that certain features of JavaScript are not supported by certain browsers.
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