We’ve already seen some basic DOM manipulation with previous examples. Things like adding a class when the DOM is ready, or updating the text of a button based upon events that the user creates as they use the page. However, these are simple, and we can do so much more. First however, let’s talk about…
HTML had an issue years ago. If you wanted to update part of a page, you had to reload everything. Think about things like Twitter/X, Instagram, etc. Imagine having to reload everything instead of just a part of your feed? It would slow your experience down, and cost a lot of money in transmission costs….
We’ve already seen one event that we’ve used with jQuery – $(document).ready(), however, there are a lot more events that we can work with. What is an Event? An event is something that happens within an application. When we talk about Event Driven Programming, we often are talking about Desktop GUI applications, but we don’t…
When you first start with jQuery, you will probably run into something that looks like this: So let’s break this down, because we’ve seen most of it already. First $. This is actually a legal variable in JavaScript. jQuery isn’t the only who uses it, but it’s most commonly associated with them. You can also…
Since jQuery is a JavaScript library, you will need to use a script tag to load it in. Loading It Local If you host your own server, you can download a copy from jQuery’s website, and then add it to a script tag to find on your server. Note: You must have a server. Most…
Understanding how a JavaScript engine works is fundamental to grasping the performance and behavior of JavaScript code, both in the browser and on the server side with Node.js. Especially if you are looking for performance enhancements of your code. However, this may be a bit more than is needed for simple applications, where you only…
JavaScript is similar to other C/C++ style languages in its syntax, although it has moved further from it as goes through its own revisions. However, the basics of the language have stayed the same. Case Sensitivity JavaScript is a case sensitive language, unlike some other contemporary languages that were in the web sphere at the…
Several languages have closures, but you will most often hear of them within JavaScript because when defining variables, you don’t always have a good way to handle scope or static properties. Specifically, it is a form of lexical scoping. This is used to preserve variables from the outer scope of a function in the inner…
