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When should I use ?? (nullish coalescing) vs || (logical OR)? I did see that description in that questions answer, but it's seemed like a repeat of well known JS boolean logic rather than a specific example – mikemaccana Commented Apr 28, 2020 at 13:18
What is the purpose of the dollar sign in JavaScript? A '$' in a variable means nothing special to the interpreter, much like an underscore From what I've seen, many people using jQuery (which is what your example code looks like to me) tend to prefix variables that contain a jQuery object with a $ so that they are easily identified and not mixed up with, say, integers
javascript - POST Request with Fetch API? - Stack Overflow Here is a complete example: After spending hours tinkering with incomplete code snippets I finally managed to post some json from javascript, pick it up using php on a server, added a data field and finally updated the original web page Here is the HTML, the PHP and the JS My thanks to everyone who posted the original code fragments collected
How to iterate (keys, values) in JavaScript? - Stack Overflow A basic doubt here I landed here looking for how to do this in node js, which is javascript on server side How do I know which ES version applies in my case Also, in case of regular javascript users, what is the proper way to support as I understand that ES version depends on the client's browser? –
JavaScript hide show element - Stack Overflow You can also use this code to show hide elements: document getElementById(id) style visibility = "hidden"; document getElementById(id) style visibility = "visible";