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if arguments.callee is not allowed in "use strict", and we can't do
var f = function g() {
//g
}
because in IE that wouldn't work (or that would work "weirdly") http://kangax.github.com/nfe/#jscript-bugs, then what other options do we have to refer to the anonymous function within the function itself?
819
An anonymous function in javascript is not accessible after its initial creation. Therefore, we need to assign it to a variable, so that we can use its value later. They are always invoked (called) using the variable name. Also, we create anonymous functions in JavaScript, where we want to use functions as values.
In several programming languages, anonymous functions are introduced using the keyword lambda, and anonymous functions are often referred to as lambdas or lambda abstractions.
They're called anonymous functions because they aren't given a name in the same way as normal functions. Because functions are first-class objects, we can pass a function as an argument in another function and later execute that passed-in function or even return it to be executed later.
That's precisely what the Y combinator is for.
Here's an article by James Coglan about deriving the Y combinator in JavaScript.
126
Don't use a named function expression. Just declare and initialize it the normal way.
function f() {
f();
}
The only viable alternative with ES5 strict is to use the code in your question, and deal with IE's crappy NFE implementation. But: do you really expect a browser that gets NFEs so horribly wrong (ahem, IE) to implement "use strict" anytime soon?
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