Is there a way to get the function parameter names of a function dynamically?  Let’s say my function looks like this:  function doSomething(param1, param2, .... paramN){    // fill an array with the parameter name and value    // some other code...
I have an EventListener that listens to the entire document and records keystrokes, but I want to remove this Listener when certain conditions are met.   The following is a snippet of my code:  document.addEventListener('keyup', function(e) {...
I want to be able to check whether a given function is empty or not. That is, there is nothing in its body, eg:  function foo() {} function iAmEmpty(a) {     // yep, empty }   With some initial playing around, I've got something which I think mig...
i'm trying to figure out how much i can use of the javascript language itself and how much i would have to implement myself when it comes to object reflection. here's the intended result  // property inheritance schema (defining default props...
I have some typescript code, and I'm doing some metaprogramming where I need to be able to access instance.func.name, however TypeScript omits the function name in the compiled JS.   TypeScript:  class ClassName {     // ...      func(): ReturnTy...
I have a class with a property that can be an Image (i.e. an IMG element) or a Canvas. When I serialize it to JSON, I need to convert this to a text string. If it is a Canvas, then I can call Canvas#toDataURL. But if it is an Image, I first need to d...
Is there any significant difference between Reflect and Proxy?  From what is documented, it seems that they have pretty much the same capabilities, apart from:   Reflect being capable of specifying only one trap at the time. Proxy being revocable. Pr...
I have a html component that includes some javascript.   The component is a file in a template engine, so it can be used   in the initial rendering of the whole html page as stand-alone html rendered through an ajax request   The javascript should be...
Is there a way in js to list all the builtin functions and some info on their parameterlists? I couldn't really find anything about reflection to do this sort of thing  edit: The functions such as Math.sin are actually the ones I want to list, ac...

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