Joel Ross
Winter 2023
CSS Frameworks: Bootstrap
View of the Day
-
Q&A
-
Bootstrap Demo (code together!)
Q&A / Review
Demo
Link the Framework
<head>
<!--... other elements here...-->
<!-- link Bootstrap -->
<link rel="stylesheet"
href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.2/dist/css/bootstrap.min.css">
<!-- link own stylesheets AFTER framework -->
<link rel="stylesheet" href="css/my-style.css">
</head>minified CSS file!
Utility Classes
Bootstrap provides rules that apply to particular classes. Give an element that class in order to style it in a certain way.
Bootstrap Grids
row
row
column
column
column
Grid Columns
There are 12 columns in the grid
Elements can take up many columns
Row 1:
Row 2:
Row 3:
Specify columns based on screen-size
Smaller screen display
A Row:
Interactive Widgets
The Bootstrap framework provides some interactive "widgets" you can use without writing separate JavaScript code, just by using specific HTML attributes.
<!-- include Bootstrap library (before your script!) -->
<!-- copy script tag from the Bootstrap home page -->
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.2/dist/js/bootstrap.bundle.min.js"></script>Example: Collapsables
As a simple example, you can make an element "collapsable" so that it disappears with a button click!
<button class="btn btn-primary"
data-bs-toggle="collapse"
data-bs-target="#collapseExample"
aria-expanded="false" aria-controls="collapseExample">
Button with data-bs-target
</button>
<div class="collapse" id="collapseExample">
Some placeholder content for the collapse component. This panel is
hidden by default but revealed when the user clicks the toggler.
</div>aria for screen-readers
Example: NavBar
See https://getbootstrap.com/docs/5.2/components/
navbar/#toggler for an example of a NavBar with a collapsible "hamburger menu"
Action Items!
-
Read: through Chapter 10
Now is a good time to catch up!
Problem Set 04 due Wednesday
- Project Draft 1 due week from Monday
Next: JavaScript!!
info340wi23-bootstrap
By Joel Ross
