JavaScript does not have syntax-level encapsulation. All properties of an object are visible. However, there do exist various patterns to ensure data encapsulation. Singletons and the Module Pattern The following code creates one singleton object using an object literal. JavaScript…
JavaScript is a prototypal object-oriented language, which means objects can inherit directly other objects. This is in contrast with the classical languages such as Java, where a subclass inherits from a superclass, and objects are instances of classes. However, the…
AJAX stands for Asynchronous JavaScript and XML. AJAX is a way to exchange data with a server using JavaScript; this allows updating parts of a web page instead of reloading a whole new page. Example applications using AJAX includes Google…
A DNF formula is a disjunction (OR) of clauses; a clause is a conjunction (AND) of literals; a literal is a variable or its negation. For example, \[ (x_1 \wedge x_2 \wedge \overline{x_3}) \vee (x_1 \wedge \overline{x_4}) \vee (x_3 \wedge…