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A string in JavaScript is a sequence of characters. In JavaScript, strings can be created directly (as literals) by placing the series of characters between double (") or single (') quotes. Such strings must be written on a single line, but may include escaped newline characters (such as \n).
In class-based, object-oriented programming, a constructor (abbreviation: ctor) is a special type of function called to create an object. It prepares the new object for use, often accepting arguments that the constructor uses to set required member variables.
This is an accepted version of this page This is the latest accepted revision, reviewed on 2 February 2025. High-level programming language Not to be confused with Java (programming language), Javanese script, or ECMAScript. JavaScript Screenshot of JavaScript source code Paradigm Multi-paradigm: event-driven, functional, imperative, procedural, object-oriented Designed by Brendan Eich of ...
JSFuck - Write any JavaScript with 6 Characters: []()!+ – web application for encoding JavaScript to JSFuck; JavaScript code of the aforementioned converter; JScrewIt - Another tool to convert JavaScript to JSFuck, with environment-specific optimizations; Esolang - The esoteric programming languages wiki
Generally, the concept of a "class" does not even exist. Rather, the prototype or parent of an object is just another object to which the object is linked. In Self, an object may have multiple or no parents, [34] but in the most popular prototype-based language, Javascript, every object has one prototype link (and only one). New objects can be ...
(In the JavaScript language, one can do this by using a null prototype, i.e. Object.create(null).) Cloning refers to a process whereby a new object is constructed by copying the behavior of an existing object (its prototype). The new object then carries all the qualities of the original. From this point on, the new object can be modified.
In class-based programming, a factory is an abstraction of a constructor of a class, while in prototype-based programming a factory is an abstraction of a prototype object. A constructor is concrete in that it creates objects as instances of one class, and by a specified process (class instantiation), while a factory can create objects by instantiating various classes, or by using other ...
Another way of stating this is that "inheritance breaks encapsulation". [20] The problem surfaces clearly in open object-oriented systems such as frameworks, where client code is expected to inherit from system-supplied classes and then substituted for the system's classes in its algorithms. [6]