Programming JS in a functional style is often more elegant but comes at the cost of performance. In the past, part of that performance problem has been due to native, C++ implementations of the most-often used higher-order operations like Array.prototype....

An overview of the 3 free O’Reilly books about JavaScript along with some information on their authors. (more…)

Admit it, you’ve done it. You have a bug somewhere in your web page and you add an alert to popup a useful message like “I am in the if statement” or “varName=Bob” to help you figure out what is wrong with your code. In IE9 we have an alternative: the Con... (more…)

Are your JavaScript animations ruining page performance? Try creating this lightweight CSS and SVG animation instead, and keep your page load speed down. (more…)

On this topic: Part 1 | Part 2 | Part 3 | Part 4 | Part 5 | Part 6...