#javascript

#javascript

During its lifetime, JavaScript has had several names: During development, its name was Mocha. In the Netscape Navigator 2.0 betas (September 1995), it was called LiveScript. In Netscape Navigator 2.0 beta 3 (December 1995), it got its most common name, JavaScript. Why that name? JavaScript was going to be a glue language for components written in Java. The first standard for JavaScript was published in 1997, hosted by Ecma International (called ECMA at the time).

Promises have long been our go-to when working with asynchronous code in JavaScript. If you've used Promise.all() or Promise.race() to coordinate async operations, you know the patterns. But what if you're only interested in the first successful result, ignoring failures? That's exactly what Promise.any() does: it fulfills with the first resolved promise and ignores any that reject (unless all reject).

This time, we're going dynamic. In this final chapter, we're stepping into the world of interactivity by adding JavaScript into the mix. We'll start by generating the layers programmatically, giving us more flexibility and cleaner code (and we'll never have to copy-paste divs again). Then, we'll add some interaction. Starting with a simple :hover effect, and ending with a fully responsive bulging text that follows your mouse in real time. Let's go.

If you already know JavaScript, learning Python will feel easier because many core concepts are the same. Both languages use similar data types (strings, numbers, lists/arrays, objects/dictionaries), functions with default parameters, and control flow (loops, conditionals). The biggest differences are in syntax: Python relies on indentation instead of curly braces, uses keywords like def instead of function, and is generally more concise. Your JavaScript knowledge gives you a strong head start-you'll just need to adjust to Python's style and rules.

The board consists of rows and columns of tiles, some of which contain a mine. Initially all tiles are covered. The point of the game is to uncover all the tiles except the ones containing the mines.

Internationalization involves more than just text translation; it encompasses formatting dates, pluralization, and sorting according to cultural expectations. The Intl API allows modern JavaScript to handle these tasks natively.

Generative AI platforms such as ChatGPT and Claude require websites to be crawlable by AI bots for effective mentions and citations. Disabling JavaScript improves crawlability, as many AI crawlers struggle with JavaScript rendering, which differs from Google’s capabilities. This means publishers must ensure essential content is accessible even without JavaScript. AI optimization tools like Aiso can evaluate and enhance a site's crawlability, providing suggestions for improvement. Site owners must also verify their robots.txt files to allow AI bot access, as many content management systems restrict bots by default.

In a newly discovered supply chain attack, attackers last week targeted a range of npm-hosted JavaScript type testing utilities, several of which were successfully compromised to distribute malware.

npm has taken down all versions of the real Stylus library and replaced them with a 'security holding' page, breaking pipelines and builds worldwide that rely on the package.

Building a custom progress bar from scratch requires boilerplate JavaScript using XMLHttpRequest and its upload.onprogress event.

"This was a stealth miner, designed to avoid detection by staying below the radar of both users and security tools," security researcher Himanshu Anand said.

The latest JavaScript specification introduces a built-in global Iterator object, enhancing the functional programming capabilities of iterable collections with improved lazy evaluation and syntax.

Object.entries() returns an array of [key, value] pairs for all the owned properties of an object, enabling various array methods for manipulation.