Arguments object is deprecated about advanced-javascript HOT 11 CLOSED

Here's what babel transpiles it to:

I don't think the argument object itself is deprecated. I know of arguments.callee. Besides, Babel transpiles to arguments too so i'd say it isn't that bad to use.

P.S: I think @jeresig is trying to avoid using es6, so it's best we don't add it. Why? It makes it all easy.
And the arguments.callee he used was just for illustration which was backed by the named function.

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Okay. Es6 out. I think the source is old though. Really nice repo.

I wonder why people still prefer constructors to factory functions though

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I think it all boils down to the implementation details 😅
Although, it does reduce the number of new keywords. Still, it seem a lil bit Verbose compared to the Constructor Pattern.

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while trying out one of your quizzes. I did this

function Ninja(){
  this.name = "Ninja";
}

assert(name === "Ninja", "Ooops!, leaked out")

And you can guess the outcome 😄

Kyle Simpson and Eric Elliot prefer factory functions though, but as you said, it all boils down to implementation details.

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It's not mine... Full credits to John Resig...
You should get something like name is not defined
Except you called Ninja which in turn, attaches name to the global context?

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This actually

function Ninja(){
  this.name = "Ninja";
}

var ninjaA = Ninja(); // This line does the magic
assert( name === "Ninja", "Is undefined, not an instance of Ninja." );
assert( !ninjaA, "Is undefined, not an instance of Ninja." );

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@ashinzekene Yeah, Obviously. By calling it that way, name get attached to the global context. The new keyword changes/prevents that :)

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Nice 😀

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I just wrapped my head around the fact that the this bonding occurs at the call site which is the global context like you said. Did you read Kyle Simpson's book?

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I read it. That's great. Kyle is awesome 🌟

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Really awesome. Cool. No wonder you're a boss 😂

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