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javiersalinas00 / checkFullscreen.js
Created September 2, 2026 22:49
javascript code to check if the user enters fullscreen
const query = window.matchMedia('(display-mode: fullscreen)')
query.matches; // true or false
query.addEventListener('change', ({ matches }) => {
if (matches) {
console.log('full screen initiated')
} else {
console.log('full screen canceled')
}
/*
***
* Media queries
***
* List of media queries
* for later use
* Author: jaaviersalinas.cl
* v 1.0
***
*/
data:text/html, <style type="text/css">.e{position:absolute;top:0;right:0;bottom:0;left:0;}</style><div class="e" id="editor"></div><script src="https://cdn.jsdelivr.net/npm/ace-builds@1.4.1/src-min-noconflict/ace.js" type="text/javascript" charset="utf-8"></script><script>var e=ace.edit("editor");e.setTheme("ace/theme/monokai");e.getSession().setMode("ace/mode/html");</script>