JavaScript_Succinctly

Sample: sample77.html
var addFunction = new Function('num1', 'num2', 'return num1 + num2');
*/
/* Alternately, a single comma-separated string with arguments can be
the first parameter of the constructor, with the function body following.
var timesFunction = new Function('num1,num2', 'return num1 * num2');
console.log(addFunction(2, 2), timesFunction(2, 2)); // Logs '4 4'
// Versus the more common patterns for instantiating a function:
var addFunction = function (num1, num2) { return num1 + num2; }; //
Expression form.
function addFunction(num1, num2) { return num1 + num2; } // Statement
form.
Notes
Directly leveraging the Function() constructor is not recommended or typically ever
done because JavaScript will use eval() to parse the string containing the function’s
logic. Many consider eval() to be unnecessary overhead. If it’s in use, a flaw in the
design of the code is highly possible.
Using the Function() constructor without the new keyword has the same effect as
using only the constructor to create function objects (e.g., new Function('x','return
x') vs. function(('x','return x')).
No closure is created (see Chapter 7) when invoking the Function() constructor
directly.
Function() properties and methods
The function object has the following properties (not including inherited properties and
methods):
Properties (e.g., Function.prototype;):
prototype
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