ecmascript-5

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Object.constructor===Object.constructor.constructor // why?

stated here https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function the constructor property of an instance of a function object \"specifies the function that creates an object\'[详细]

2023-03-05 06:59 分类：问答
why **(Object.__proto__ instanceof Function)** === false?

why does开发者_运维百科 Object._proto_ instanceof Function gives me false? alert(Object.__proto__ ); //clearly Object.__proto__ is a function right?[详细]

2023-03-04 21:49 分类：问答
How do I call the Tamarin ESC Compiler from AS3 Code?

I\'m trying to call Tamarin\'s ESC Compiler from AS3 code. I\'ve got the ESC Compiler byte code loaded in Flash Player, but when I call it, the ESC Compiler always returns the same do nothing byte cod[详细]

2023-03-02 14:13 分类：问答
how to ensure the browser can support **{get X() {}}**

i refuse to use __defineProperty__ and instead prefer the alternative syntax {get X() {}} However this will not work on IE.[详细]

2023-02-28 03:51 分类：问答
Does ES5 have a counterpart to __lookupGetter__?

I know Object.defineProperty is lots of fun and a great replacement for __defineGetter__ and __defineSetter__ nonstandard APIs, but is there a similar counterpart for __l开发者_JAVA技巧ookupGetter__?[详细]

2023-02-24 00:44 分类：问答
JavaScript: Adding properties to a sealed object should throw a typeerror exception?

Suppose I\'ve got something like this in JavaScript: var obj = { name: \"Luis\" }; Object.seal( obj ); obj.address = \"Fx\"; //what should happen here?[详细]

2023-02-20 19:44 分类：问答
How to make a DOM handler enumerable in Safari?

I need to enumerate all the properties of my DOM elements which I previously modified. I could do it with Firefox, Chrome and Opera but I could not with Safari (I don\'t care about IE for the moment).[详细]

2023-02-19 16:49 分类：问答
How should I implement a function to find indices of non-true elements of an array?

I have a function named uncompletedSteps(): function uncompletedSteps(completedSteps) { // completedSteps is an array[详细]

2023-02-17 19:41 分类：问答
ECMAScript 5 compatibility script for older browsers

Is there already a opensource project out there which implements ECMAScript 5 features for browsers which do no implement it natively? Something like the IE7.js project which implements missing standa[详细]

2023-02-17 11:03 分类：问答
How to get name of JavaScript Class

Let\'s take the following example code: var ns = {}; // Some namespace ns.Test = function() { // Constructor of class Test[详细]

2023-02-17 08:39 分类：问答