Interacting with HTML
- Declare variables that store HTML elements
Accessing an Element
Variables can also represent parts of the HTML that we’ve written. For example, if we wanted a variable to represent the
h1 heading at the top of our page, we’d need to do two things:
- Add an ID to the
h1element in the HTML
.getElementByIdto access that element
Here’s how that looks in practice:
<!-- HTML code --> <h1 id="greeting">Hello, world!</h1>
// JS code var greetingMessage = document.getElementById('greeting'); console.log(greetingMessage); // "<h1 id="greeting">Hello, world!</h1>" will print out to the console
Try It: Accessing HTML Elements
Fork this Puppy Facts CodePen starter. Declare four variables, each storing one of the four text-based HTML elements already written. You can decide the variable names to use! In order to access each element, you'll need a unique way to identify each one.
Print each variable out to the console to verify your syntax is correct.
Keep this pen open in a tab; we'll come back to it in the next section!
Need to see an example of this completed? Here you go!
Changing Text of an Element
Before we talk through it, take a minute to sit in that productive struggle and try to sort through what this code is doing, and how. The guiding questions below will help you, if you need them!
- What is the content inside of each of the
<li>tags in the HTML file?
- What content is showing up in the browser for each of the bullet points?
- On line 4 of the code:
- What does
- What might
"Front End Workshop"look familiar?
- What does
Try It: Changing Text of an Element
When you've completed this, you should see a different title and set of facts in your browser!Here's a CodePen you can start with if you closed yours or didn't get it done.
🌶Click here for a Spicy Challenge🌶
Do some research to figure out how you can change the
src attribute of an