Quick Reference
The window.matchMedia() method returns a MediaQueryList with the results from the query.
The media queries of the matchMedia() method can be any of the media features of the CSS @media rule.
<!-- html element to place output -->
<p id="my_output"></p>// variable
let my_result;
// test
if (window.matchMedia('(max-width: 767px)').matches) {
my_result = 'The screen is <= 767px.';
}
else {
my_result = 'The screen is > 767px.';
}
// output to HTML my_element
document.getElementById('my_output').innerHTML = my_result;Output
The screen is > 767px.Syntax
window.matchMedia(mediaQuery)JavaScript Notes:
- When using JavaScript, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
- JavaScript is a case-sensitive language; firstName is NOT the same as firstname
- Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
- JavaScript variables must begin with a letter, $, or _
- JavaScript variables are case sensitive (x is not the same as X)
We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.