Skip to main content

JavaScript: How to dynamically get the name of the method inside the method in a class?

I would like to get the name of the method inside the method in a class and throw an error when one argument is passed to the method. For example, if the name of the instance is instance_of_cookie and the name of the method is (for simplicity) the_method, then passing one argument to that method should throw an error like "instance_of_cookie.the_method" expected two arguments or simply "the_method" expected two arguments.

I can get the name of the function inside the function using arguments.calle.name. But that doesn't seem to work inside class methods and throws the following error:

VM10:4 Uncaught TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them
    at Cookie.the_method (<anonymous>:4:28)
    at eval (eval at the_method (:4:28), <anonymous>:1:32)
    at Cookie.the_method (<anonymous>:4:28)
    at <anonymous>:13:32

I came across a post which mentioned this.constructor.name but that gives me the name of the class.

class Cookie {
  the_method(x, y) {
    if (y == undefined) {
      return `'${this.constructor.name}' expects two arguments; one was given`;
    } else {
        return "Everything's OK"
    }
  }
}

let instance_of_cookie = new Cookie();

console.log(instance_of_cookie.the_method(8))

Is there any way I can get the name of the method inside the method in a class?

(Note: I can hard-code the name of the method, but for some reasons, I don't want to do that.)

Via Active questions tagged javascript - Stack Overflow https://ift.tt/rvyiqQR

Comments

Popular posts from this blog

Confusion between commands.Bot and discord.Client | Which one should I use?

Whenever you look at YouTube tutorials or code from this website there is a real variation. Some developers use client = discord.Client(intents=intents) while the others use bot = commands.Bot(command_prefix="something", intents=intents) . Now I know slightly about the difference but I get errors from different places from my code when I use either of them and its confusing. Especially since there has a few changes over the years in discord.py it is hard to find the real difference. I tried sticking to discord.Client then I found that there are more features in commands.Bot . Then I found errors when using commands.Bot . An example of this is: When I try to use commands.Bot client = commands.Bot(command_prefix=">",intents=intents) async def load(): for filename in os.listdir("./Cogs"): if filename.endswith(".py"): client.load_extension(f"Cogs.{filename[:-3]}") The above doesnt giveany response from my Cogs ...

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype

Where and how is this Laravel kernel constructor called? [closed]

Where and how is this Laravel kernel constructor called? public fucntion __construct(Application $app, $Router $roouter) { } I have read the documentation and some online tutorial but I can find any clear explanation. I am learning Laravel and I am wondering where does this kernel constructor receives its arguments from. "POSTMOTERM" CLARIFICATION: Here is more clarity.I have checked the boostrap/app.php and it is only used for boostrapping the interfaces into the container class. What is not clear to me is where and how the Kernel class is instatiated and the arguments passed to the object calling the constructor.Something similar to; obj = new kernel(arg1,arg2) or, is the framework using some magic functions somewhere? Special gratitude to those who burn their eyeballs and brain cells on this trivia before it goes into a full blown menopause alias "MARKED AS DUPLICATE". To some of the itchy-finger keyboard warriors, a.k.a The mods,because I believe in th...