What are the exact circumstances for which a return statement in Javascript can return a value other than this when a constructor is invoked using the new keyword?  Example:  function Foo () {   return something; }  var foo = new Foo ();   If I'...
The following JavaScript code is very confusing to me. Could anyone help me understand. Why does PersonY not have prototype property.  PersonX = function(){}; PersonY = new function(){}; alert(PersonX.prototype); alert(PersonY.prototype);     ?...
Please help me to understand why the following code works:  <script>     var re = RegExp('\\ba\\b') ;     alert(re.test('a')) ;     alert(re.test('ab')) ; </script>   In the first line there is no new operator....
In the middle of Mozilla documentation page it switches (without clear enough explanation) examples from  WorkerBee.prototype = Object.create(Employee.prototype);   to   WorkerBee.prototype = new Employee;   Second form new Employee will initialize p...
I'm using Single File Photo Gallery and want to make one mod to the script... Currently the images open in a new pop up window when left-clicked. If you right click on the image thumb it allows the option for "Open Link" but not "Open...
I understand the difference in behavior. Date() returns a String representing the current date, and new Date() returns an instance of the Date object whose methods I can call.  But I don't know why. JavaScript is prototyped, so Date is a function...
Consider this code:  function klass( z ) {     this.a = z;     return this; }  var b = klass( 5 ); var c = new klass( 9 );    When I run it in Chrome and check in the console, b turns out to be of type DOMWindow, while c is of type klass.    Although...
I've no doubt that these are probably documented on the internet somewhere and indexed by Google - but after wading through pages and pages of links to discussions about disabling the functionality I thought I'd ask to see if anyone can give...
I'm looking through the Vows documentation and in several places it uses the syntax  var myVar = new(MyFunction);   e.g.  var promise = new(events.EventEmitter);   I am familiar with new MyFunction() and new MyFunction (and yes, I have read this...

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