Development JavaScript and its execution engines A JavaScript engine is a tool that executes JavaScript code.There are two types of JavaScript engines from the point of view of operation: runtime interpretes JIT: just-in-time compilation Runtime interpreters have less
Development Scopes and declaration of variables with var, let and const in JavaScript In JavaScript there are two main scopes where to locate the variables, and these scopes determine the accessibility to these variables:* global * local: no están accesibles desde el scope global A variable in
