From the MDN docs for the standard setPrototypeOf function as well as the non-standard __proto__ property: Mutating the [[Prototype]] of an object, no matter how this is accomplished, is strongly discouraged, because it is very slow and unavoidably slows down subsequent execution in modern JavaScript implementations. Using Function.prototype to add properties is the way to add member functions to javascript
Tag: prototype
overriding prototype property or function
now log showing me true. which means swingSword that were defined in Ninja.prototype has overridden so how can i override the constructor function or property.?? i know that preference is given to constructor variable then why need to define a function or property inside prototype?? Answer The reason to define a function on the prototype is so that it is
Why is extending native objects a bad practice?
Every JS opinion leader says that extending the native objects is a bad practice. But why? Do we get a perfomance hit? Do they fear that somebody does it “the wrong way”, and adds enumerable types to Object, practically destroying all loops on any object? Take TJ Holowaychuk’s should.js for example. He adds a simple getter to Object and everything
Is there a way to add try-catch to every function in Javascript?
For error reporting, I would like to insert a try-catch wrapper around the code of every function I have. So basically I want to replace …with… Is there a way to apply this generic try-catch thing to all functions without manually editing all of them? For example by modifying the prototype of the Function object? EDIT Why I want to
Javascript inheritance and method overriding
Assume I have a class like this: From this class I created some other classes which inherit the same prototype but have some added methods. What I want to do is being able to define a load() method in the sub-classes which first calls the parent method and then execute some code. Something like: I know there’s no super keyword