Interesting question:
How to disable scroll on mobile device BUT in code no need to check mobile browser o etc.
I'm writing mobile version of web site. In web browser my function works well!
When i calling Scroll("off); it's stops. But on mobile device (ios) i still can touchmoving content.
Can someone help to modify function for this case? Result must be: No scroll on web, NO touching moves on mobile device.
Here what i have:
function Scroll(str)
{
var scrollPosition = [
self.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
self.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop
];
if(str=="off")
{
var html = jQuery("html");
html.data("scroll-position", scrollPosition);
html.data("previous-overflow", html.css("overflow"));
html.css("overflow", "hidden");
window.scrollTo(scrollPosition[0], scrollPosition[1]);
}
else
{
var html = jQuery("html");
var scrollPosition = html.data("scroll-position");
html.css("overflow", html.data("previous-overflow"));
window.scrollTo(scrollPosition[0], scrollPosition[1]);
}
}
Solution is:
$('body').bind('touchmove', function(e){e.preventDefault()});
$("body").unbind("touchmove");
Yesterday I had an issue with a JQuery scrolling script that worked in Chrome but not in IE and Firefox. I asked this query (JQuery scroll() / scrollTop() not working in IE or Firefox) yesterday which I marked as being the correct answer only to realise today that it doesn't work in Chrome anymore!
Can anyone help me get this working on all modern browsers?
HTML
<div id="dotted-line">
<div id="up-arrow">^up</div>
</div>
JQuery
//get window size values (cross browser compatible)
(function(undefined) {
var container = $("html,body");
$.windowScrollTop = function(newval) {
if( newval === undefined) {
return container.scrollTop();
}
else {
return container.scrollTop(newval);
}
}
})();
//draw dotted line on scroll
$(window).scroll(function(){
if ($.windowScrollTop() > 10) {
var pos = $.windowScrollTop();
$('#dashes').css('height',pos/4);
$('#footer-dot').css('top',pos/4);
} else {
$('#dashes').css('height','6px');
$('#footer-dot').css('top','-150px');
}
});
scrollTop() will return value of only first matched element in set
$('html,body'), that's why it no more works on chrome
I think your best bet would be to use:
var container = $(document.scrollingElement || "html");
I'm trying to get the total height of a page using JavaScript so I can check if the page is long enough to display something, however in my testing I am unable to get the total height of a page.
I've looked around on the Internet but things like this don't seem to be well documented, as all I can find is scrollHeight, which, as I might mention, doesn't work.
Any way to use JavaScript to find it?
Without a framework:
var _docHeight = (document.height !== undefined) ? document.height : document.body.offsetHeight;
var _docWidth = (document.width !== undefined) ? document.width : document.body.offsetWidth;
document.documentElement.scrollHeight is working ok for me in the latest version of Internet Explorer, Chrome, Firefox and Safari.
Have you tried $(document).height(); ?
Demo here
Height of entire page...
document.body.offsetHeight
Height of viewport...
var h,
de = document.documentElement;
if (self.innerHeight) {h = window.innerHeight;}
else if (de && de.clientHeight) {h = de.clientHeight;}
else if (document.body) {h = document.body.clientHeight;}
This article may help you.
To find the height of the entire document you could just find the highest DOM Node on current page with a simple recursion:
;(function() {
var pageHeight = 0;
function findHighestNode(nodesList) {
for (var i = nodesList.length - 1; i >= 0; i--) {
if (nodesList[i].scrollHeight && nodesList[i].clientHeight) {
var elHeight = Math.max(nodesList[i].scrollHeight, nodesList[i].clientHeight);
pageHeight = Math.max(elHeight, pageHeight);
}
if (nodesList[i].childNodes.length) findHighestNode(nodesList[i].childNodes);
}
}
findHighestNode(document.documentElement.childNodes);
// The entire page height is found
console.log('Page height is', pageHeight);
})();
NOTE: It is working with Iframes.
Enjoy!
Perhaps use the position of an element at the bottom of the page, like:
$("#footer").offset().top
Have a look at the documentation. One of the supported methods: height, innerHeight, outerHeight may be suitable for you.
Can anyone tell me how to turn
Top
aka the Top of Page link into a Bookmarklet.
Not very knowledgeable with JavaScript and cannot get this into want I want it to be.
Or if I am using the wrong code, then can you fix it for me and turn it into the bookmarklet.
Create a bookmark with location:
javascript:void(function(){window.scroll(0,0)}())
Works in Firefox 3 and IE 7.
Another option ...
function scrollUp(){
var offy;
if(self.pageYOffset) {
offy = self.pageYOffset;
} else if(document.documentElement && document.documentElement.scrollTop){
offy = document.documentElement.scrollTop;
} else {
offy = document.body.scrollTop;
}
if(offy <= 0) return;
window.scrollBy(0, -50);
setTimeout("scrollUp()", 10);
}
Start Scroller!
here is an article from my bookmarks .. its a simple and easy solution that I have been using for a long time now.
http://www.geeksww.com/tutorials/web_development/javascript/tips_and_tricks/javascript_go_to_top_of_page.php
hope this works
Is there any way of reliably detecting if a browser is running in full screen mode? I'm pretty sure there isn't any browser API I can query, but has anyone worked it out by inspecting and comparing certain height/width measurements exposed by the DOM? Even if it only works for certain browsers I'm interested in hearing about it.
Chrome 15, Firefox 10, and Safari 5.1 now provide APIs to programmatically trigger fullscreen mode. Fullscreen mode triggered this way provides events to detect fullscreen changes and CSS pseudo-classes for styling fullscreen elements.
See this hacks.mozilla.org blog post for details.
What about determining the distance between the viewport width and the resolution width and likewise for height. If it is a small amount of pixels (especially for height) it may be at fullscreen.
However, this will never be reliable.
Opera treats full screen as a different CSS media type. They call it Opera Show, and you can control it yourself easily:
#media projection {
/* these rules only apply in full screen mode */
}
Combined with Opera#USB, I've personally found it extremely handy.
You can check if document.fullscreenElement is not null to determine if fullscreen mode is on. You'll need to vendor prefix fullscreenElement accordingly. I would use something like this:
var fullscreenElement = document.fullscreenElement || document.mozFullScreenElement ||
document.webkitFullscreenElement || document.msFullscreenElement;
https://msdn.microsoft.com/en-us/library/dn312066(v=vs.85).aspx has a good example for this which I quote below:
document.addEventListener("fullscreenChange", function () {
if (fullscreenElement != null) {
console.info("Went full screen");
} else {
console.info("Exited full screen");
}
});
The Document read-only property returns the Element that is currently being presented in full-screen mode in this document, or null if full-screen mode is not currently in use.
if(document.fullscreenElement){
console.log("Fullscreen");
}else{
console.log("Not Fullscreen");
};
Supports in all major browsers.
Firefox 3+ provides a non-standard property on the window object that reports whether the browser is in full screen mode or not: window.fullScreen.
Just thought I'd add my thruppence to save anyone banging their heads. The first answer is excellent if you have complete control over the process, that is you initiate the fullscreen process in code. Useless should anyone do it thissen by hitting F11.
The glimmer of hope on the horizon come in the form of this W3C recommendation http://www.w3.org/TR/view-mode/ which will enable detection of windowed, floating (without chrome), maximized, minimized and fullscreen via media queries (which of course means window.matchMedia and associated).
I've seen signs that it's in the implementation process with -webkit and -moz prefixes but it doesn't appear to be in production yet.
So no, no solutions but hopefully I'll save someone doing a lot of running around before hitting the same wall.
PS *:-moz-full-screen does doo-dah as well, but nice to know about.
While searching high & low I have found only half-solutions.
So it's better to post here a modern, working approach to this issue:
var isAtMaxWidth = (screen.availWidth - window.innerWidth) === 0;
var isAtMaxHeight = (screen.availHeight - window.outerHeight <= 1);
if (!isAtMaxWidth || !isAtMaxHeight) {
alert("Browser NOT maximized!");
}
Tested and working properly in Chrome, Firefox, Edge and Opera* (*with Sidebar unpinned) as of 10.11.2019.
Testing environment (only desktop):
CHROME - Ver. 78.0.3904.97 (64-bit)
FIREFOX - Ver. 70.0.1 (64-bit)
EDGE - Ver. 44.18362.449.0 (64-bit)
OPERA - Ver. 64.0.3417.92 (64-bit)
OS - WIN10 build 18362.449 (64-bit)
Resources:
https://developer.mozilla.org/en-US/docs/Web/API/Screen/availWidth
https://developer.mozilla.org/en-US/docs/Web/API/Window/innerWidth
https://developer.mozilla.org/en-US/docs/Web/API/Screen/availHeight
https://developer.mozilla.org/en-US/docs/Web/API/Window/outerHeight
In Chrome at least:
onkeydown can be used to detect the F11 key being pressed to enter fullscreen.
onkeyup can be used to detect the F11 key being pressed to exit fullscreen.
Use that in conjunction with checking for keyCode == 122
The tricky part would be to tell the keydown/keyup not to execute its code if the other one just did.
Right. Totally late on this one...
As of 25th Nov, 2014 (Time of writing), it is possible for elements to request fullscreen access, and subsequently control entering/exiting fullscreen mode.
MDN Explanation here: https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Using_full_screen_mode
Straightforward explanation by David Walsh: http://davidwalsh.name/fullscreen
For Safari on iOS can use:
if (window.navigator.standalone) {
alert("Full Screen");
}
More:
https://developer.apple.com/library/archive/documentation/AppleApplications/Reference/SafariWebContent/ConfiguringWebApplications/ConfiguringWebApplications.html
This works for all new browsers :
if (!window.screenTop && !window.screenY) {
alert('Browser is in fullscreen');
}
There is my NOT cross-browser variant:
<!DOCTYPE html>
<html>
<head>
<title>Fullscreen</title>
</head>
<body>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script type="text/javascript">
var fullscreen = $(window).height() + 1 >= screen.height;
$(window).on('resize', function() {
if (!fullscreen) {
setTimeout(function(heightStamp) {
if (!fullscreen && $(window).height() === heightStamp && heightStamp + 1 >= screen.height) {
fullscreen = true;
$('body').prepend( "<div>" + $( window ).height() + " | " + screen.height + " | fullscreen ON</div>" );
}
}, 500, $(window).height());
} else {
setTimeout(function(heightStamp) {
if (fullscreen && $(window).height() === heightStamp && heightStamp + 1 < screen.height) {
fullscreen = false;
$('body').prepend( "<div>" + $( window ).height() + " | " + screen.height + " | fullscreen OFF</div>" );
}
}, 500, $(window).height());
}
});
</script>
</body>
</html>
Tested on:
Kubuntu 13.10:
Firefox 27 (<!DOCTYPE html> is required, script correctly works with dual-monitors), Chrome 33, Rekonq - pass
Win 7:
Firefox 27, Chrome 33, Opera 12, Opera 20, IE 10 - pass
IE < 10 - fail
My solution is:
var fullscreenCount = 0;
var changeHandler = function() {
fullscreenCount ++;
if(fullscreenCount % 2 === 0)
{
console.log('fullscreen exit');
}
else
{
console.log('fullscreened');
}
}
document.addEventListener("fullscreenchange", changeHandler, false);
document.addEventListener("webkitfullscreenchange", changeHandler, false);
document.addEventListener("mozfullscreenchange", changeHandler, false);
document.addEventListener("MSFullscreenChanges", changeHandler, false);
This is the solution that I've come to...
I wrote it as an es6 module but the code should be pretty straightforward.
/**
* Created by sam on 9/9/16.
*/
import $ from "jquery"
function isFullScreenWebkit(){
return $("*:-webkit-full-screen").length > 0;
}
function isFullScreenMozilla(){
return $("*:-moz-full-screen").length > 0;
}
function isFullScreenMicrosoft(){
return $("*:-ms-fullscreen").length > 0;
}
function isFullScreen(){
// Fastist way
var result =
document.fullscreenElement ||
document.mozFullScreenElement ||
document.webkitFullscreenElement ||
document.msFullscreenElement;
if(result) return true;
// A fallback
try{
return isFullScreenMicrosoft();
}catch(ex){}
try{
return isFullScreenMozilla();
}catch(ex){}
try{
return isFullScreenWebkit();
}catch(ex){}
console.log("This browser is not supported, sorry!");
return false;
}
window.isFullScreen = isFullScreen;
export default isFullScreen;
2021, the Fullscreen API is available. It's a Living Standard and is supported by all browsers (except the usual suspects - IE11 and iOS Safari).
// toggle fullscreen
if (!document.fullscreenElement) {
// enter fullscreen
if (docElm.requestFullscreen) {
console.log('entering fullscreen')
docElm.requestFullscreen()
}
} else {
// exit fullscreen
if (document.exitFullscreen) {
console.log('exiting fullscreen')
document.exitFullscreen()
}
}
User window.innerHeight and screen.availHeight. Also the widths.
window.onresize = function(event) {
if (window.outerWidth === screen.availWidth && window.outerHeight === screen.availHeight) {
console.log("This is your MOMENT of fullscreen: " + Date());
}
To detect whether browser is in fullscreen mode:
document.webkitIsFullScreen || document.mozFullScreen || document.msFullscreenElement
according to caniuse you should be fine for majority of browsers.
This property returns the Element that is currently in fullscreen mode.
document.fullscreenElement; // HTML Element or null
Also, you can subscribe to fullscreen change events with this method
addEventListener('fullscreenchange', (event) => { });
You can combine both to detect the nature of the change
addEventListener('fullscreenchange', () => {
if (document.fullscreenElement) {
// Your Logic if fullscreen
}
});
More on this here.
You can detect full screen using CSS like this:
#media all and (display-mode: fullscreen) {
// Regular CSS to be applied in full-screen mode
}