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4. Function() > Defining a Function (Statement, Expression, or Constructor)
Defining a Function (Statement, Expression, or Constructor)
A function can be defined in three different ways: a function constructor, a function statement, or a function expression. Below, I demonstrate each variation.
<!DOCTYPE html><html lang="en"><body><script> /* function constructor: the last parameter is the function logic, everything before it is a parameter */ var addConstructor = new Function('x', 'y', 'return x + y'); // function statement function addStatement(x, y) { return x + y; } // function expression var addExpression = function(x, y) { return x + y; }; console.log(addConstructor(2,2), addStatement (2,2), addExpression (2,2)); // logs '4 4 4' </script></body></html>
