Вопрос: Получить размер экрана, текущей веб-страницы и окна браузера


Как я могу получить windowWidth, windowHeight, pageWidth, pageHeight, screenWidth, screenHeight, pageX, pageY, screenX, screenYкоторый будет работать во всех основных браузерах?

screenshot describing which values are wanted


1560


источник


Ответы:


Если вы используете jQuery, вы можете получить размер окна или документа с помощью методов jQuery:

$(window).height();   // returns height of browser viewport
$(document).height(); // returns height of HTML document (same as pageHeight in screenshot)
$(window).width();   // returns width of browser viewport
$(document).width(); // returns width of HTML document (same as pageWidth in screenshot)

Для размера экрана вы можете использовать screenобъекта следующим образом:

screen.height;
screen.width;

1113



Это все, что вам нужно знать:

http://andylangton.co.uk/articles/javascript/get-viewport-size-javascript/

но одним словом:

var w = window,
    d = document,
    e = d.documentElement,
    g = d.getElementsByTagName('body')[0],
    x = w.innerWidth || e.clientWidth || g.clientWidth,
    y = w.innerHeight|| e.clientHeight|| g.clientHeight;
alert(x + ' × ' + y);

скрипка


801



Вот кросс-браузерное решение с чистым JavaScript ( Источник ):

var width = window.innerWidth
|| document.documentElement.clientWidth
|| document.body.clientWidth;

var height = window.innerHeight
|| document.documentElement.clientHeight
|| document.body.clientHeight;

360



A non-jQuery way to get the available screen dimension. window.screen.width/height has already been put up, but for responsive webdesign and completeness sake I think its worth to mention those attributes:

alert(window.screen.availWidth);
alert(window.screen.availHeight);

http://www.quirksmode.org/dom/w3c_cssom.html#t10 :

availWidth and availHeight - The available width and height on the screen (excluding OS taskbars and such).


77



But when we talk about responsive screens and if we want to handle it using jQuery for some reason,

window.innerWidth, window.innerHeight

gives the correct measurement. Even it removes the scroll-bar's extra space and we don't need to worry about adjusting that space :)


45



function wndsize(){
  var w = 0;var h = 0;
  //IE
  if(!window.innerWidth){
    if(!(document.documentElement.clientWidth == 0)){
      //strict mode
      w = document.documentElement.clientWidth;h = document.documentElement.clientHeight;
    } else{
      //quirks mode
      w = document.body.clientWidth;h = document.body.clientHeight;
    }
  } else {
    //w3c
    w = window.innerWidth;h = window.innerHeight;
  }
  return {width:w,height:h};
}
function wndcent(){
  var hWnd = (arguments[0] != null) ? arguments[0] : {width:0,height:0};
  var _x = 0;var _y = 0;var offsetX = 0;var offsetY = 0;
  //IE
  if(!window.pageYOffset){
    //strict mode
    if(!(document.documentElement.scrollTop == 0)){offsetY = document.documentElement.scrollTop;offsetX = document.documentElement.scrollLeft;}
    //quirks mode
    else{offsetY = document.body.scrollTop;offsetX = document.body.scrollLeft;}}
    //w3c
    else{offsetX = window.pageXOffset;offsetY = window.pageYOffset;}_x = ((wndsize().width-hWnd.width)/2)+offsetX;_y = ((wndsize().height-hWnd.height)/2)+offsetY;
    return{x:_x,y:_y};
}
var center = wndcent({width:350,height:350});
document.write(center.x+';<br>');
document.write(center.y+';<br>');
document.write('<DIV align="center" id="rich_ad" style="Z-INDEX: 10; left:'+center.x+'px;WIDTH: 350px; POSITION: absolute; TOP: '+center.y+'px; HEIGHT: 350px"><!--К сожалению, у Вас не установлен flash плеер.--></div>');

17



You can also get the WINDOW width and height, avoiding browser toolbars and other stuff. It is the real usable area in browser's window.

To do this, use: window.innerWidth and window.innerHeight properties (see doc at w3schools).

In most cases it will be the best way, in example, to display a perfectly centred floating modal dialog. It allows you to calculate positions on window, no matter which resolution orientation or window size is using the browser.


15



To check height and width of your current loaded page of any website using "console" or after clicking "Inspect".

step 1: Click the right button of mouse and click on 'Inspect' and then click 'console'

step 2: Make sure that your browser screen should be not in 'maximize' mode. If the browser screen is in 'maximize' mode, you need to first click the maximize button (present either at right or left top corner) and un-maximize it.

step 3: Now, write the following after the greater than sign ('>') i.e.

       > window.innerWidth
            output : your present window width in px (say 749)

       > window.innerHeight
            output : your present window height in px (say 359)

11



If you need a truly bulletproof solution for the document width and height (the pageWidth and pageHeight in the picture), you might want to consider using a plugin of mine, jQuery.documentSize.

It has just one purpose: to always return the correct document size, even in scenarios when jQuery and other methods fail. Despite its name, you don't necessarily have to use jQuery – it is written in vanilla Javascript and works without jQuery, too.

Usage:

var w = $.documentWidth(),
    h = $.documentHeight();

for the global document. For other documents, e.g. in an embedded iframe you have access to, pass the document as a parameter:

var w = $.documentWidth( myIframe.contentDocument ),
    h = $.documentHeight( myIframe.contentDocument );

Update: now for window dimensions, too

Ever since version 1.1.0, jQuery.documentSize also handles window dimensions.

That is necessary because

  • $( window ).height() is buggy in iOS, to the point of being useless
  • $( window ).width() and $( window ).height() are unreliable on mobile because they don't handle the effects of mobile zooming.

jQuery.documentSize provides $.windowWidth() and $.windowHeight(), which solve these issues. For more, please check out the documentation.


8



I wrote a small javascript bookmarklet you can use to display the size. You can easily add it to your browser and whenever you click it you will see the size in the right corner of your browser window.

Here you find information how to use a bookmarklet https://en.wikipedia.org/wiki/Bookmarklet

Bookmarklet

javascript:(function(){!function(){var i,n,e;return n=function(){var n,e,t;return t="background-color:azure; padding:1rem; position:fixed; right: 0; z-index:9999; font-size: 1.2rem;",n=i('<div style="'+t+'"></div>'),e=function(){return'<p style="margin:0;">width: '+i(window).width()+" height: "+i(window).height()+"</p>"},n.html(e()),i("body").prepend(n),i(window).resize(function(){n.html(e())})},(i=window.jQuery)?(i=window.jQuery,n()):(e=document.createElement("script"),e.src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js",e.onload=n,document.body.appendChild(e))}()}).call(this);

Original Code

The original code is in coffee:

(->
  addWindowSize = ()->
    style = 'background-color:azure; padding:1rem; position:fixed; right: 0; z-index:9999; font-size: 1.2rem;'
    $windowSize = $('<div style="' + style + '"></div>')

    getWindowSize = ->
      '<p style="margin:0;">width: ' + $(window).width() + ' height: ' + $(window).height() + '</p>'

    $windowSize.html getWindowSize()
    $('body').prepend $windowSize
    $(window).resize ->
      $windowSize.html getWindowSize()
      return

  if !($ = window.jQuery)
    # typeof jQuery=='undefined' works too
    script = document.createElement('script')
    script.src = 'http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js'
    script.onload = addWindowSize
    document.body.appendChild script
  else
    $ = window.jQuery
    addWindowSize()
)()

Basically the code is prepending a small div which updates when you resize your window.


8



I developed a library for knowing the real viewport size for desktops and mobiles browsers, because viewport sizes are inconsistents across devices and cannot rely on all the answers of that post (according to all the research I made about this) : https://github.com/pyrsmk/W


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