Lots of high-res images can really spruce up a Web site. But they can also slow it down– images are files, files use bandwidth, and bandwidth is directly related to wait times. It’s time you get ...

Peter looks at how to call a JavaScript function from your TypeScript code and do it in a type-safe way. Along the way, he dramatically simplifies a Backbone application by integrating Knockout. I ...

Use popular 'grammar of data' syntax to filter and subset your two-dimensional JavaScript arrays and more. Here's how to use Arquero for data wrangling in Observable JavaScript and Node.js. There are ...

In a previous column, I showed how to create a "Hello, World" application that integrated JavaScript functions and C# Blazor methods. However, my Blazor-world and JavaScript-world code didn't interact ...

Finishing AP Computer Science Principles is a major milestone, but the leap from block-based coding to real-world JavaScript can feel daunting. Fortunately, the landscape has evolved: Code.org has ...

Asynchronous code (async code) says: go do something while I do other things, then let me know what happened when the results are ready. Also known as concurrency, async is important in a variety of ...