Search results
Sep 27, 2022 · slice(): Pull a copy of a portion of an array into a new array. splice(): Add positions and elements in a specified way. toString(): Convert elements to strings. unshift(): Add a new element to the beginning. valueOf(): Return the first position at which a given element appears in an array. Skip to bottom of list.
Jul 23, 2014 · JavaScript arrow functions are roughly the equivalent of lambda functions in python or blocks in Ruby. These are anonymous functions with their own special syntax and operate in the context of their enclosing scope. This mean they do not have their own "this" but instead access the one from the immediate enclosing function. From the ECMA standard:
- Data types. Let's start off by looking at the building blocks of any language: the types. JavaScript programs manipulate values, and those values all belong to a type.
- Variables. Variables in JavaScript are declared using one of three keywords: let, const, or var. let allows you to declare block-level variables. The declared variable is available from the block it is enclosed in.
- Operators. JavaScript's numeric operators include +, -, *, /, % (remainder), and ** (exponentiation). Values are assigned using =. Each binary operator also has a compound assignment counterpart such as += and -=, which extend out to x = x operator y.
- Grammar. JavaScript grammar is very similar to the C family. There are a few points worth mentioning: Identifiers can have Unicode characters, but they cannot be one of the reserved words.
Aug 3, 2024 · JavaScript is a scripting language that enables you to create dynamically updating content, control multimedia, animate images, and pretty much everything else. (Okay, not everything, but it is amazing what you can achieve with a few lines of JavaScript code.) The three layers build on top of one another nicely.
Feb 2, 2024 · JavaScript list comprehension may not have a dedicated syntax like Python or Perl, but that doesn’t mean it’s any less powerful. In a realm dominated by dynamic data and the need for efficient operations on arrays, understanding how to perform list comprehension in JavaScript is indispensable for developers. This comprehensive guide will walk you through the practical nuances of array ...
Feb 13, 2024 · JavaScript is a high-level, interpreted programming language primarily used to make web pages interactive and dynamic. Initially developed by Brendan Eich in 1995 for Netscape Navigator, it has since evolved into one of the most popular programming languages globally. History of JavaScript. JavaScript was created in 1995 by Brendan Eich while ...
Aug 7, 2024 · The JavaScript documentation on MDN includes the following: Learn Web Development provides information for beginners and introduces basic concepts of programming and the Internet. JavaScript Guide (this guide) provides an overview about the JavaScript language and its objects. JavaScript Reference provides detailed reference material for ...
