javascript test if element has focus
var myElement = document.getElementById('myID');
if(myElement === document.activeElement){
//myElement Has Focus
}javascript test if element has focus
var myElement = document.getElementById('myID');
if(myElement === document.activeElement){
//myElement Has Focus
}javascript if browser out of focus
var hidden, visibilityChange;
if (typeof document.hidden !== "undefined") { // Opera 12.10 and Firefox 18 and later support
hidden = "hidden";
visibilityChange = "visibilitychange";
} else if (typeof document.msHidden !== "undefined") {
hidden = "msHidden";
visibilityChange = "msvisibilitychange";
} else if (typeof document.webkitHidden !== "undefined") {
hidden = "webkitHidden";
visibilityChange = "webkitvisibilitychange";
}
function handleVisibilityChange() {
if (document[hidden]) {
// Do here something if page is hidden (not in focus)
} else {
// Do here something if page is in focus
}
}
if (typeof document.addEventListener === "undefined" || hidden === undefined) { // Skip if the browser doesn't support addEventListener or the Page Visibility API
} else {
document.addEventListener(visibilityChange, handleVisibilityChange, false); // Handle page visibility change
}Copyright © 2021 Codeinu
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