Is it possible to detect change in orientation of the browser on the iPad or Galaxy Tab using javascript? I think it's possible using css media queries.
NOTE: orientationChange is deprecated
Instead use screen.orientation using the screenOrientation interface
var orientation = (screen.orientation || {}).type || screen.mozOrientation || screen.msOrientation;
if (orientation === "landscape-primary") {
console.log("That looks good.");
} else if (orientation === "landscape-secondary") {
console.log("Mmmh... the screen is upside down!");
} else if (orientation === "portrait-secondary" || orientation === "portrait-primary") {
console.log("Mmmh... you should rotate your device to landscape");
} else if (orientation === undefined) {
console.log("The orientation API isn't supported in this browser :(");
}
However note the support as of July 2022
The screen.orientation is not supported by Safari at all
Older answers
The older orientationChange should still work for Safari
window.addEventListener("orientationchange", function() {
alert(window.orientation);
}, false);
MDN:
window.addEventListener("orientationchange", function() {
alert("the orientation of the device is now " + screen.orientation.angle);
});
or jQuery mobile orientationchange
$(window).on("orientationchange", function( event ) {
$("#orientation").text( "This device is in " + event.orientation + " mode!");
});
Older answer
http://www.nczonline.net/blog/2010/04/06/ipad-web-development-tips/
Safari on the iPad does support the window.orientation property, so if necessary, you can use that to determine if the user is in horizontal or vertical mode. As reminder of this functionality:
window.orientation is 0 when being held vertically
window.orientation is 90 when rotated 90 degrees to the left (horizontal)
window.orientation is -90 when rotated 90 degrees to the right (horizontal)
There is also the orientationchange event that fires on the window object when the device is rotated.
You can also use CSS media queries to determine if the iPad is being held in vertical or horizontal orientation, such as:
<link rel="stylesheet" media="all and (orientation:portrait)" href="portrait.css">
<link rel="stylesheet" media="all and (orientation:landscape)" href="landscape.css">
http://www.htmlgoodies.com/beyond/webmaster/toolbox/article.php/3889591/Detect-and-Set-the-iPhone--iPads-Viewport-Orientation-Using-JavaScript-CSS-and-Meta-Tags.htm
<script type="text/javascript">
var updateLayout = function() {
if (window.innerWidth != currentWidth) {
currentWidth = window.innerWidth;
var orient = (currentWidth == 320) ? "profile" : "landscape";
document.body.setAttribute("orient", orient);
window.scrollTo(0, 1);
}
};
iPhone.DomLoad(updateLayout);
setInterval(updateLayout, 400);
</script>
You can use mediaMatch to evaluate CSS media queries, e.g.
window
.matchMedia('(orientation: portrait)')
.addListener(function (m) {
if (m.matches) {
// portrait
} else {
// landscape
}
});
CSS media query fires before the orientationchange. If you are looking to capture the end of the event (when the rotation has been completed), see mobile viewport height after orientation change.
In 2022, instead of adding a window orientationchange listener (listener not recommended due to deprecation) you should listen for a screen.orientation change event:
if (screen.orientation) { // Property doesn't exist on screen in IE11
screen.orientation.addEventListener("change", callback);
}
All browsers except IE and Safari now support it. (here is a screenshot of screen from IE11:
... notice that orientation is not a supported attribute of screen in IE11)
The Screen Orientation API is thoroughly documented. The main focus is the ScreenOrientation interface, which extends Screen. Here are 2 screenshots of the orientation attribute of Screen, which shows how the angle changes from 0 (portrait) to 90 (landscape) on an Android device:
You can use the orientationchange event like so:
window.addEventListener('orientationchange', function(event) {
/* update layout per new orientation */
});
I realized that nobody mentioned what happens when the device is held upside-down in this thread.
window.orientation returns -90 or 90 when held horizontal. It returns 0 or 180 when held vertical. Some devices do and some don't support being held upside-down. I recommend,
window.addEventListener("orientationchange", function() {
if ( window.orientation == 0 || window.orientation == 180) {
// WHEN IN PORTRAIT MODE
} else {
// WHEN IN LANDSCAPE MODE
}
}, false);
Also note that window.orientation returns undefined on desktops.
From "Cross-device, cross-browser portrait-landscape detection"
This is about finding out whether a mobile device is in portrait or landscape mode; you don't need to care about its orientation. For all you know, if you hold your iPad upside down, it's in portrait mode.
$(window).bind("resize", function(){
screenOrientation = ($(window).width() > $(window).height())? 90 : 0;
});
90 means landscape, 0 means portrait, cross browser, cross device.
The window.onresize event is available everywhere, and it's always fired at the right time; never too early, never too late. As a matter of fact, the size of the screen is always accurate as well.
The JavaScript version would be this, correct me please if I am wrong.
function getScreenOrientation() {
screenOrientation = window.outerWidth > window.outerHeight ? 90 : 0;
console.log("screenOrientation = " + screenOrientation);
}
window.addEventListener("resize", function(event) {
getScreenOrientation();
});
getScreenOrientation();
window.orientation is what you're looking for. there's also an onOrientationChange event
works for android, iphone and, i'm mostly sure, for ipad
Adding to the #mplungjan answer, I found better results using the webkit "native" (I don't really how to called it) event, 'deviceorientation'.
In the Mozilla Developer network they have a good explanation about how to normalize between webkit and Gecko that helped me to solve this problem.
An easy to use snippet :
function doOnOrientationChange()
{
switch(window.orientation)
{
case -90:
case 90:
// alert('landscape');
$('#portrait').css({display:'none'});
$('#landscape').css({display:'block'});
break;
default:
// alert('portrait');
$('#portrait').css({display:'block'});
$('#landscape').css({display:'none'});
break;
}
}
window.addEventListener('orientationchange', doOnOrientationChange);
// First launch
doOnOrientationChange();
orientationChange is deprecated and also not supported in some browsers,
innerHeight and outerHeight sometimes give inconsistent results in ios
so we can use document.documentElement to check orientation along with resize event
const { clientWidth, clientHeight } = document.documentElement;
if (clientHeight > clientWidth) {
setOrientation("portrait-secondary");
} else {
setOrientation("landscape-primary");
}
As of 2022
Once you get ready like this,
let theDeviceIsRotated;
function handlePortraitOrLandscape() {
setTimeout(afterAnUnnoticableDelay,100); // This solves the wrong-firing-order issue on Samsung Browser.
function afterAnUnnoticableDelay() {
if (screen.orientation) { // Mainly for Android (as of 2022)
// Returns 0 or 90 or 270 or 180
if (screen.orientation.angle == 0) { theDeviceIsRotated="no"; }
if (screen.orientation.angle == 90) { theDeviceIsRotated="toTheLeft"; }
if (screen.orientation.angle == 270) { theDeviceIsRotated="toTheRight"; }
if (screen.orientation.angle == 180) { theDeviceIsRotated="upsideDown"; }
} else { // Mainly for iOS (as of 2022)
// Returns 0 or 90 or -90 or 180
if (window.orientation == 0) { theDeviceIsRotated="no"; }
if (window.orientation == 90) { theDeviceIsRotated="toTheLeft"; }
if (window.orientation == -90) { theDeviceIsRotated="toTheRight"; }
if (window.orientation == 180) { theDeviceIsRotated="upsideDown"; }
}
}
}
handlePortraitOrLandscape(); // Set for the first time
window.addEventListener("resize",handlePortraitOrLandscape); // Update when change happens
you can
if (theDeviceIsRotated == "no") {
// Do your thing
} else if (theDeviceIsRotated == "toTheLeft") {
// Do your thing
} else if (theDeviceIsRotated == "toTheRight") {
// Do your thing
} else if (theDeviceIsRotated == "upsideDown") {
// Do your thing
} else {
// The mysterious 5th orientation nobody has ever seen yet
}
but note that
RESIZE does not fire when switching from 90 to 270 directly (without triggering a portrait view in between)
THEREFORE WE CANNOT RELY ON
window.addEventListener("resize",screenOrientationHasChanged);
AND THERE IS THE EXACT SAME PROBLEM WITH
window.screen.orientation.addEventListener('change',screenOrientationHasChanged);
ALSO WITH
window.addEventListener("orientationchange",screenOrientationHasChanged);
THIS SADLY MEANS THAT AS OF 2022 THERE IS NO RELIABLE WAY TO DETECT SCREEN ORIENTATION CHANGE even by using setInterval
BECAUSE neither screen.orientation.angle nor screen.orientation.type is updated when you go from 90 to 270 without triggering a portrait view in between.
So the following is not any better than resize on mobile devices
if (screen.orientation) {
window.screen.orientation.addEventListener('change',screenOrientationHasChanged); // https://whatwebcando.today/screen-orientation.html
} else {
window.addEventListener("orientationchange",screenOrientationHasChanged); // https://developer.mozilla.org/en-US/docs/Web/API/Window/orientationchange_event
}
You may try to lock the screen orientation to avoid errors but that does not work on iOS as of 2022 and it only works with fullscreen mode on Android.
I have developed the website in react and using the semantic-ui-react components.
Have wrote the below code in render method for resizing the website for mobile.
let mobile = false;
let tablet = false;
let computer = false;
if (typeof window !== 'undefined' && window.document) {
mobile = window.innerWidth < 500;
tablet = window.innerWidth > 500 && window.innerWidth < 986;
computer = window.innerWidth > 986;
I want the web pages should look good on android/Samsung phone also,
Now when i open on android phone it is taking the same view as computer but when i open on iPhone its taking the mobile view and renders website properly.
Hi guys I'm trying to figure out how to use these icons by Erik Flower in my React app. I am using openweather api to get the data and I am trying use these icons.
I am trying to implement this code in axios request.
But for some reason its not working.
req.then(function(resp) {
var prefix = 'wi wi-';
var code = resp.weather[0].id;
var icon = weatherIcons[code].icon;
// If we are not in the ranges mentioned above, add a day/night prefix.
if (!(code > 699 && code < 800) && !(code > 899 && code < 1000)) {
icon = 'day-' + icon;
}
// Finally tack on the prefix.
icon = prefix + icon;
});
can anyone help me out please?
I am new to angularjs and I would like to understand what the directives do but I can't find a tutorial with different example by complexity and I was curios if I could move the following code in a directive.
// hide the url bar
var page = document.getElementById('page'),
ua = navigator.userAgent,
iphone = ~ua.indexOf('iPhone') || ~ua.indexOf('iPod'),
ipad = ~ua.indexOf('iPad'),
ios = iphone || ipad,
// Detect if this is running as a fullscreen app from the homescreen
fullscreen = window.navigator.standalone,
android = ~ua.indexOf('Android'),
lastWidth = 0;
if (android) {
// Android's browser adds the scroll position to the innerHeight.
// Thus, once we are scrolled, the page height value needs to be corrected in case the page is loaded
// when already scrolled down. The pageYOffset is of no use, since it always
// returns 0 while the address bar is displayed.
window.onscroll = function () {
page.style.height = window.innerHeight + 'px'
}
}
var setupScroll = window.onload = function () {
// Start out by adding the height of the location bar to the width, so that
// we can scroll past it
if (ios) {
// iOS reliably returns the innerWindow size for documentElement.clientHeight
// but window.innerHeight is sometimes the wrong value after rotating
// the orientation
var height = document.documentElement.clientHeight;
// Only add extra padding to the height on iphone / ipod, since the ipad
// browser doesn't scroll off the location bar.
if (iphone && !fullscreen) height += 60;
page.style.height = height + 'px';
} else if (android) {
// The stock Android browser has a location bar height of 56 pixels, but
// this very likely could be broken in other Android browsers.
page.style.height = (window.innerHeight + 56) + 'px'
}
// Scroll after a timeout, since iOS will scroll to the top of the page
// after it fires the onload event
setTimeout(scrollTo, 0, 0, 1);
};
(window.onresize = function () {
var pageWidth = page.offsetWidth;
// Android doesn't support orientation change, so check for when the width
// changes to figure out when the orientation changes
if (lastWidth == pageWidth) return;
lastWidth = pageWidth;
setupScroll();
})();
I wrote a blog entry not too long ago about the basics of directives if you're interested in that.
As far as converting what you have there into a directive, it's not too crazy.
All you would do is use the code you already have, but inject $window instead of using window. (Mostly for testing purposes). I also added a check to make sure it didn't get applied twice.
So it would look a little something like this:
app.directive('windowResizeThingy', function($window) {
return {
restrict: 'A',
link: function(scope, elem, attr) {
// make sure this doesn't get applied twice.
if($window.windowResizeThingyApplied) return;
$window.windowResizeThingyApplied = true;
// hide the url bar
var page = elem[0],
ua = $window.navigator.userAgent,
iphone = ~ua.indexOf('iPhone') || ~ua.indexOf('iPod'),
ipad = ~ua.indexOf('iPad'),
ios = iphone || ipad,
// Detect if this is running as a fullscreen app from the homescreen
fullscreen = $window.navigator.standalone,
android = ~ua.indexOf('Android'),
lastWidth = 0;
if (android) {
// Android's browser adds the scroll position to the innerHeight.
// Thus, once we are scrolled, the page height value needs to be corrected in case the page is loaded
// when already scrolled down. The pageYOffset is of no use, since it always
// returns 0 while the address bar is displayed.
window.onscroll = function () {
page.style.height = window.innerHeight + 'px'
}
}
var setupScroll = $window.onload = function () {
// Start out by adding the height of the location bar to the width, so that
// we can scroll past it
if (ios) {
// iOS reliably returns the innerWindow size for documentElement.clientHeight
// but window.innerHeight is sometimes the wrong value after rotating
// the orientation
var height = document.documentElement.clientHeight;
// Only add extra padding to the height on iphone / ipod, since the ipad
// browser doesn't scroll off the location bar.
if (iphone && !fullscreen) height += 60;
page.style.height = height + 'px';
} else if (android) {
// The stock Android browser has a location bar height of 56 pixels, but
// this very likely could be broken in other Android browsers.
page.style.height = (window.innerHeight + 56) + 'px'
}
// Scroll after a timeout, since iOS will scroll to the top of the page
// after it fires the onload event
setTimeout(scrollTo, 0, 0, 1);
};
($window.onresize = function () {
var pageWidth = page.offsetWidth;
// Android doesn't support orientation change, so check for when the width
// changes to figure out when the orientation changes
if (lastWidth == pageWidth) return;
lastWidth = pageWidth;
setupScroll();
})();
}
};
});
And to apply it, you'd find your #page element you were applying it to before:
<div id="page" window-resize-thingy></div>
... and that should be it really. Presuming the code you have works, it should be run pretty much the same way.
I am attempting to work on a mobile site using the maps found at jVectorMap
http://jvectormap.owl-hollow.net/
I found that when viewing the page on an iphone in landscape mode, I needed to change the scale command to .4. However, when in portrait mode, it needs to be smaller, such as .2.
I am using this code to adjust the scale value found in the js library downloaded from jVectorMap. The commented out code is the original code that i modified in an attempt to fit an iphone screen
applyTransformParams: function(scale, transX, transY) {
if (this.mode == 'svg') {
this.rootGroup.setAttribute('transform', 'scale(.4) translate(30, '+transY+')');
//this.rootGroup.setAttribute('transform', 'scale('+scale+') translate('+transX+', '+transY+')');
} else {
this.rootGroup.coordorigin = (this.width-transX)+','+(this.height-transY);
this.rootGroup.coordsize = this.width/scale+','+this.height/scale;
}
}
My question is, is there a way I can determine the screen orientation via the js and have it update the scale numbers? Or perhaps there is a command for a best fit for mobile?
Thanks for any help
You can check if a browser supports the onorientationchange event (or fall back to onresize) like this:
var evt;
if ((typeof window.orientation !== 'undefined') && ('onorientationchange' in window)) {
evt = 'orientationchange';
} else {
evt = 'resize';
}
You can always get the orientation like this:
var getOrientation = function () {
if (evt === 'orientationchange') {
return = (window.orientation === 0) ? 'portrait' : 'landscape';
} else {
return = (window.innerHeight > window.innerWidth) ? 'portrait' : 'landscape';
}
};
Then you can subscribe to that event & do your scaling there.
var originalOrientation = getOrientation;
window.addEventListener(evt, function () {
var orientation = getOrientation();
if (orientation !== originalOrientation) {
originalOrientation = orientation;
// do your scaling here...
}
});