Recently, Michael Ficarra pointed me to an efficient algorithm for repeating a string several times. In this blog post, I explain how it works.

This blog post describes JavaScript’s binary bitwise operators: bitwise And (&), bitwise Or (|), and bitwise Xor (^).

Code snippet – this is roughly how you would implement the new operator in JavaScript:

TC39 [1] is the committe that currently plans ECMAScript 6 (code-named ECMAScript.next), the next version of the JavaScript language standard. In this blog post, I’m summarizing the highlights of several meetings that they had in 2013, in March, May, July, September and November. Previous blog posts summarized prior meetings.

This post is made possible by Rick Waldron’s excellent notes of the meetings.

New version of this blog post: inside “ECMAScript 6: new OOP features besides classes”.

Copying all properties of one object to another one is a common operation in JavaScript. This blog post explains ECMAScript 6’s implementation of it, which is called Object.assign().

This blog post examines how one can dynamically evaluate code in JavaScript.

This blog post describes five technologies that will make 2014 an exciting year for the web platform:

1. asm.js: near-native performance on the web
2. ParallelJS: parallelized JavaScript code
3. ECMAScript 6 (ES6): evolving the language, uniting the community
4. Web Components: a standard infrastructure for widgets
5. CSS Grid Layout: native-like GUI layout

GitHub displays Markdown files so nicely, it’s a shame there is no print view where all the toolbars etc. are hidden. Note that printing doesn’t necessarily mean that paper is involved. For example, on Mac OS X, you can print to PDF files.

This blog post explains three ways of printing Markdown files that are hosted on GitHub:

Update 2017-05-08: a proposal for SIMD.js has been rejected, in favor of providing similar functionality via WebAssembly.

Recently, a new JavaScript feature has landed for the next Firefox Nightly: an API for SIMD (Single Instruction, Multiple Data). This blog post explains how the API works and how it fits into the JavaScript landscape.

Update 2014-05-08. Newer version of this post: “ECMAScript 6’s new array methods”

Two new Array methods (proposed by Rick Waldron) are in the latest ECMAScript 6 specification draft:

• Array.prototype.find()
• Array.prototype.findIndex()

This blog post describes them.