What is viewport in HTML? Could you give some examples on how to access the viewport details?
The viewport is the part of the webpage that the user can currently see. The scrollbars move the viewport to show other parts of the page.
Follow this article's instructions to get the viewport dimensions in Javascript.
if (typeof window.innerWidth != 'undefined')
{
viewportwidth = window.innerWidth,
viewportheight = window.innerHeight
}
I think the ViewPort is just an area to display the web content in the browser. And different browsers have their own setting for the size of ViewPort, For example, the default ViewPort width of Safari is 980 pixels. So, if the actual web page you want to see is smaller than 980 pixels, there should be a blank display area in the Safari when accessing the web page in the Safari by default. Hence, that is the reason sometimes we need to configure the ViewPort for better web content display in the browser.
Like below, for example:
<meta name="viewport" content="width=device-width">
And also please read Paul's answer. I think he already explained the usage of ViewPort.
The viewport is a virtual area used by the browser rendering engine to determine how content is scaled and sized when it is initially rendered on the current screen. This will help you:
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
The viewport is the visual area of your webpage on a browser.By using the <meta name="viewport" you can set how the content of your site is rendered on different devices.
Personally I like to use :
<meta name="viewport" content="width=device-width, initial-scale=1.0>
The viewport area is the user-visible area on the device,
the meta tag is used to set page content width as per viewport so that the content of the page will be scaled down or up as per the viewport width.
A good explanation at MDN [https://developer.mozilla.org/en-US/docs/Mozilla/Mobile/Viewport_meta_tag].
Related
I am using Foundation for a responsive website and have a problem with SOME mobile devices not properly scaling the viewport ONLY when you load another page via our ng-include. This loads new content into the page and the width of the page then breaks and requires horizontal scrolling.
This doesn't happen in certain devices such as Galaxy Note 3/4, but does happen in devices with identical resolutions, such as iPhone 6 Plus. I do have a viewport attribute and scaling set:
<meta name="viewport" content="width=device-width, initial-scale=1, target-densityDpi=device-dpi;">
Any help figuring out why this doesn't scale properly when I load new dynamic content for this single page application is greatly appreciated. I'm not sure if it's related (just thought of it), but we also use document equalizer reflow often:
$(document).foundation('equalizer','reflow');
I needed to add a min and max scale. Although I didn't test it, I imagine I just needed to add a max scale, as the content was flowing off the screen.
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0">
I am working on a Chrome extension and I am running into the following issue. I would like to resize a tab to a specific width and height, but want to override the automatic resizing of elements. So I figured I should either somehow override the onresize event or instruct chrome to render the page while manipulating the (perceieved) viewport.
For some reason I cannot find anything to perform the former and on the latter, I have found a lot of information on the meta viewport tag but for some reason cannot make it work.
See also: Dynamic viewport and Can I change the viewport meta tag in mobile safari on the fly?
To give an example how do I render this page as if it was in a window(/tab) of e.g. 600 pixels wide even though the actual tab is 1200 or whatever amount of pixels wide (and being resized, either programmatically or manually)?
Example:
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<meta name="viewport" id="viewport" content="width = 600, height = device-height, maximum scale = 1.0, minimum-scale = 1.0">
<title>Viewport testing</title>
</head>
<body>
<div style="width: 90%; border: solid 3px;">Current Viewport: <script>document.write(document.documentElement.offsetWidth.toString());</script> pixels</div>
</body>
</html>
The 600 is completely ignored and the div resizes while resizing the tab/window.
Am I overlooking something in the Chrome API?
The goal of this particular function of the extension is to be able to select an element (e.g. a div) or region (with crosshairs) of a webpage and resize the tab to show just that. I have everything working fine (selection etc, resizing and scrolling , detecting the element size etc etc) but obviously all responsive elements would be changed upon a window resize. I want to prevent that from happening.
Thanks
I am working on phonegap/cordova app. Created few pages in html5, but i can't get them to be across whole screen regardless of the size of the screen. I tried with javascript. Added this script to be activated on load:
function SetupPage(){
document.getElementsById("container").style.width=window.innerWidth;
document.getElementsById("container").style.height=window.innerHeight;
}
But it still has the size of content within it, and i need it to stretch everything depending on the screen size. How can this be done?
set your meta viewport scale
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
You should be able to use CSS after that to size how you need.
My website has responsive design, I am loading a page in mobile browser in which many images are displayed one below another. It looks fine, when orientation is changed then everything is resized and displayed properly but different content is shown than what was shown before changing orientation
For example, if there are 5 images displaying one below another in mobile browser and currently 2nd image is displaying and then after changing orientation it shows 3rd image instead of 2nd
I am currently using this::
<meta name="viewport" content="width=device-width, initial-scale=1" />
Plese help
For flexible layouts it’s more practical to base your viewport width on the device in question without setting the zooming parameter. Try the following instead:
<meta name="viewport" content="width=device-width">
I added view port meta attribute as follows:
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no" />
Usually, it works well, but the problem occurs when I use margin-left and thus move the absolute main view to the right, outside of the device view. In this case, when double-tapped, the view becomes zoomed out to contain the whole contents (including the part that is moved outside of the device view).
I don't understand why the view port meta attribute doesn't apply to this case.
Can someone answer this?
I had a similar issue with a site I was developing. I solved the issue using overflow:hidden on the body for small screen sizes. You may also want to try to use padding instead of margin and mark those elements box-sizing:border-box. Give it a shot and also post your code so I can get a better idea!
All the best,
Shalom