- JavaScript
- Intermediate
About this Course
Along with selecting DOM elements in JavaScript we can also write code that gives elements behavior. In this course we will first explore how to watch for interaction and respond using the method addEventListener. We'll learn about different types of events and how we can use the relationships between elements to write more powerful code.
Responding to Events
Here we'll get to "teach" an element to behave a certain way when a user interacts with it. For example, we could have a form field turn red if a user enters invalid text. Or a menu could appear if a user clicks on the menu bar. Let's look at these and other behaviors we can set up on a web page.
8 stepsTraversing the DOM
You have your hands on one element, but you want to grab another one nearby. You could go all the way back out to the document and call to it from there, but chances are your node already has a reference to it. Let's learn how to get around in, or traverse, the DOM.
7 stepsTeacher
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Reggie Williams
Reggie is a Treehouse Teacher, developer, and lifelong learner.