Douglas Crockford recommends to use function expression in his «JavaScript: The Good Parts» book because it makes it clear that foo is a variable containing a function value. Well, …

Dec 8, 2009 · A function declaration and a function expression are not the same thing, with the key point being that a function declaration cannot be invoked immediately. For example …

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Sep 13, 2018 · the first function declaration x() cause. function x() { ^ SyntaxError: Unexpected identifier i don't understand why i can't use the function keyword inside an object or a class , …

Dec 8, 2017 · The function declaration is syntactically quite separate from the function expression, even though they look almost identical and can be ambiguous in some cases. This is …

Jan 17, 2013 · The grammar rules only allow function .. to be parsed as a Function Declaration when it is a SourceElement although most engines will still [incorrectly] parse a Function …

Mar 11, 2013 · It's worth noting there are at least two places in which using NFEs still gives concrete advantages: firstly, for functions intended to be used as constructors via the new …

Aug 22, 2015 · A function declaration ceases to be one when it either: becomes part of an expression or is no longer a "source element" of a function or the script itself. A "source …

Nov 10, 2010 · In javascript, What is the difference between function declaration and function expression in terms of scope? function declaration means we are polluting the global space. Is …

Nov 6, 2015 · Third, there's a difference in when the function is assigned to the variable object. Functions created by a function declaration (e.g. function test() {}) may be used in code that …