I would like to execute all functions in an array in global scope. I want to use a shorthand so I decided to use Function.prototype.call and call Function.prototype's call method on all functions. I don't care about the arguments forEach sends to the functions.
[function(){}, function(){}].forEach(Function.prototype.call.call)
Why this is not working and throwing following error?
TypeError: undefined is not a function
You want:
[function(){}, function(){}]
.forEach(Function.prototype.call.bind(Function.prototype.call))
But you can simplify a bit using the Function constructor which already gives you call:
.forEach(Function.call.bind(Function.call))
Why this is not working and throwing following error?
The internal call looks something similar to
Function.prototype.call.call.apply(undefined, function() {}, 0, [])
^--- it's `undefined` here because you haven't
specified anything explicitly
as a 2nd `forEach` arg
And internally call expects that its this will point to the correct function (Function.prototype.call in this case), whereas "you" are passing undefined
So technically this code works as expected:
[
function(){console.log(1)},
function(){console.log(2)}
]
.forEach(Function.prototype.call.call, Function.prototype.call)
But the elclanrs' solution with bind is better
