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javascript Programming Glossary: protoIs it possible to achieve dynamic scoping in JavaScript without resorting to eval? http://stackoverflow.com/questions/10060857/is-it-possible-to-achieve-dynamic-scoping-in-javascript-without-resorting-to-eva improve this question Attribute lookup falls through the prototype chain which matches quite well to dynamic scopes. Just pass.. don't need to understand this but Object.create function proto this constructor does nothing function cons and we assign it.. constructor does nothing function cons and we assign it a prototype cons.prototype proto so that the new object has the given..
Objects don't inherit prototyped functions http://stackoverflow.com/questions/11072556/objects-dont-inherit-prototyped-functions don't inherit prototyped functions I have one constructor function which acts as.. which acts as a superclass Bla function a this.a a I prototype it to include a simple method Bla.prototype.f function console.log.. a this.a a I prototype it to include a simple method Bla.prototype.f function console.log f And now new Bla 1 .f will log f..
How to get a JavaScript Object's Class? http://stackoverflow.com/questions/1249531/how-to-get-a-javascript-objects-class in JavaScript. Mostly that's due to JavaScript being a prototype based language as opposed to Java being a class based one... are several options in JavaScript typeof instanceof func. prototype proto . isPrototypeOf obj. constructor A few examples function.. options in JavaScript typeof instanceof func. prototype proto . isPrototypeOf obj. constructor A few examples function Foo..
How do I check to see if an object has a property in Javascript? http://stackoverflow.com/questions/135448/how-do-i-check-to-see-if-an-object-has-a-property-in-javascript a property and it is not coming from somewhere up on the prototype chain then object.hasOwnProperty is the way to go. All modern.. Class this.a undefined this.b null this.c false Class.prototype a undefined b true c true d true e true var obj2 new Class.. Object2 prop function hasOwnProperty obj prop var proto obj.__proto__ obj.constructor.prototype return prop in obj ..
http://stackoverflow.com/questions/2266789/is-there-an-equivalent-of-the-nosuchmethod-feature-for-properties-or-a-way named as the traps you want to implement and an optional proto argument that makes you able to specify an object that your..
Array Like Objects in Javascript http://stackoverflow.com/questions/6599071/array-like-objects-in-javascript 0 'hello' Just to make sure add the length property to the prototype to match the Array prototype foo.prototype.length 0 Give.. the length property to the prototype to match the Array prototype foo.prototype.length 0 Give the Array like object an Array.. property to the prototype to match the Array prototype foo.prototype.length 0 Give the Array like object an Array method to test..
JavaScript: How does 'new' work internally http://stackoverflow.com/questions/6750880/javascript-how-does-new-work-internally least understood part of JavaScript standing beside the prototype chain. So the question is how does... new dataObj args ...actually.. dataObj args ...actually create an object and define its prototype chain constructors etc Best is to show an alternative to.. internal Prototype of this object pointing to the Function prototype property. If the function's prototype property is not an..
JavaScript inheritance and the constructor property http://stackoverflow.com/questions/8093057/javascript-inheritance-and-the-constructor-property the following code. function a function b function c b.prototype new a c.prototype new b console.log new a .constructor a.. code. function a function b function c b.prototype new a c.prototype new b console.log new a .constructor a console.log new b.. Function instance the constructor function has a property prototype which is a pointer. The prototype property of the constructor..
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