Javascript element viewport position

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Javascript element viewport position

The Element. The returned value is a DOMRect object which is the union of the rectangles returned by getClientRects for the element, i. The result is the smallest rectangle which contains the entire element, with read-only lefttoprightbottomxywidthand height properties describing the overall border-box in pixels. Properties other than width and height are relative to the top-left of the viewport.

javascript element viewport position

Empty border-boxes are completely ignored. If all the element's border-boxes are empty, then a rectangle is returned with a width and height of zero and where the top and left are the top-left of the border-box for the first CSS box in content order for the element. The amount of scrolling that has been done of the viewport area or any other scrollable element is taken into account when computing the bounding rectangle. This means that the rectangle's boundary edges toprightbottomleft change their values every time the scrolling position changes because their values are relative to the viewport and not absolute.

If you need the bounding rectangle relative to the top-left corner of the document, just add the current scrolling position to the top and left properties these can be obtained using window. Scripts requiring high cross-browser compatibility can use window.

Scripts without access to these properties can use code like this:. The returned DOMRect object can be modified in modern browsers. With IE and Edge, not being able to add missing properties to their returned ClientRectobject prevents backfilling x and y.

Due to compatibility problems see belowit is safest to rely on only properties lefttoprightand bottom. Properties in the returned DOMRect object are not own properties.

javascript element viewport position

While the in operator and for Moreover, and unexpectedly, the ES and newer features such as Object. Get the latest and greatest from MDN delivered straight to your inbox. Sign in to enjoy the benefits of an MDN account. The compatibility table in this page is generated from structured data. Last modified: Mar 25,by MDN contributors. Related Topics. Learn the best of web development Get the latest and greatest from MDN delivered straight to your inbox.

The newsletter is offered in English only at the moment. Sign up now. Sign in with Github Sign in with Google. Chrome Full support 2. Edge Full support Firefox Full support 3. IE Full support 4. Opera Full support 9.

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Safari Full support 6. Chrome Android Full support Firefox Android Full support 4. Opera Android Full support This results in incorrect values whenever the user has zoomed. Samsung Internet Android Full support 1. Chrome Full support Yes.

javascript element viewport position

IE Full support 9.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I am wondering how I can get the number of pixels or measurement in general from a div to the top of the window in Javascript. I am not looking for an offset y in relation to the document, simply to the top of where the browser is displaying.

I tried the "answered" solution here: Is it possible to get the position of div within the browser viewport? Not within the document. Within the windowbut at least in Safari, I am running into a problem where it returns the same number no matter where the div's really are. The existing answers are now outdated. The getBoundingClientRect method has been around for quite a while now, and does exactly what this question asks for.

Plus it is supported across all browsers. From this MDN page:. The returned value is a TextRectangle object, which contains read-only left, top, right and bottom properties describing the border-box, in pixels, with the top-left relative to the top-left of the viewport. Check out what the JS Frameworks have to offer. Mostly, they have worked out all - or at least most - of the browser specific problems and specialties. In Prototype, there are the scrollOffset functions.

I'm not familiar enough with JQuery to point you to the right manual page but here is a question that seems to go towards the right direction. This answer tells you how to get the x and y coords of an element with respect the origin top left of a document. You just need to add the.

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Viewed 32k times. Thanks for any help! Jan Molak 3, 1 1 gold badge 31 31 silver badges 31 31 bronze badges. PF1 PF1 4, 14 14 gold badges 44 44 silver badges 73 73 bronze badges.

Thanks Matchu: I have updated the title. Matchu meant View port which is a synonym for the browser window.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. The correct approach is to use element. All other browsers adopted it a long time ago. Some browsers also return height and width properties, though this is non-standard. If you're worried about older browser compatibility, check this answer's revisions for an optimised degrading implementation.

Element.getBoundingClientRect()

The values returned by element. If you need it relative to another element, simply subtract one rectangle from the other:. The libraries go to some lengths to get accurate offsets for an element. If you want it done only in javascripthere are some one liners using getBoundingClientRect. These specifiy the position of the element relative its nearest parent that has layout. This parent can often be accessed bif the offsetParent property. These properties are less common, they specify an elements position with its parents client area padded area is part of the client area but border and margin is not.

Here's a demo comparing the results to jQuery's offset. If page includes - at least- any "DIV", the function given by meouw throws the "Y" value beyond current page limits.

In order to find the exact position, you need to handle both offsetParent's and parentNode's. To retrieve the position relative to the page efficiently, and without using a recursive function: includes IE also. How about something like this, by passing ID of the element and it will return the left or top, we can also combine them:. You might be better served by using a JavaScript framework, that has functions to return such information and so much more!

Here are a few:. I've taken meouw's answer, added in the clientLeft that allows for the border, and then created three versions:. Note that the given element must contain the element el, or this will behave the same as getAbsoluteOffsetFromBody. This is useful if you have two elements contained within another known element optionally several nodes up the node tree and want to make them the same position.

This is similar to getAbsoluteOffsetFromGivenElement, for the same reason but will only go as far as the first matching element. Plus the bonus of using jQuery is it's lightweight file size and easy use, you won't go back to JavaScript without it afterwards.

This is the best code I've managed to create works in iframes as well, unlike jQuery's offset. Seems webkit has a bit of a different behavior. The cleanest approach I have found is a simplified version of the technique used by jQuery's offset.

Similar to some of the other answers it starts with getBoundingClientRect ; it then uses the window and the documentElement to adjust for scroll position as well as things like the margin on the body often the default. While this is very likely to be lost at the bottom of so many answers, the top solutions here were not working for me. As far as I could tell neither would any of the other answers have helped.

I wanted the navigation to stick to the top once a user scrolled to it, but previous to this the header was absolute positioned so I could have it overlay something else slightly. The solutions above never triggered a change because.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I want to get the position of an element relative to the browser's viewport the viewport in which the page is displayed, not the whole page.

How can this be done in JavaScript? The existing answers are now outdated. The native getBoundingClientRect method has been around for quite a while now, and does exactly what the question asks for.

Plus it is supported across all browsers including IE 5, it seems! From MDN page :. The returned value is a TextRectangle object, which contains read-only left, top, right and bottom properties describing the border-box, in pixels, with the top-left relative to the top-left of the viewport. That allows me to get the real relative position of element on document, even if it has been scrolled. The id argument is the id of the element whose offset you want. Adapted from a quirksmode post.

If you look at the source for jQuery's offsetyou'll find this is basically how it's implemented:. The function on this page will return a rectangle with the top, left, height and width co ordinates of a passed element relative to the browser view port. Thanks for all the answers. It seems Prototype already has a function that does this the page function.

By viewing the source code of the function, I found that it first calculates the element offset position relative to the page i. See the source code of prototype for more details. I am assuming an element having an id of btn1 exists in the web page, and also that jQuery is included.In my CSS I applied the following styles to my class "fixed":.

I'm wondering why my fixed header does not go higher than the wrapper div. I thought that elements with a fixed position are relative to the viewport, so shouldn't it go right up to the top of the viewport? I did notice that the body has a margin-top of 70px. Is my fixed position div receiving inheritance from the body?

Get the position of an element relative to the document

Are fixed position elements relative to the body? Is the viewport and body the same? So confused. The short answer is that fixed position elements are relative to the browser window, so that should be an easy way to think about it. Here are a couple resources to check out that should help! That helps a bit. But it still doesn't make sense to me why my div with a fixed position is pushed down 70px from the top.

The body element has a margin-top of 70px, but I thought that a fixed position element isn't relative to the body? It's relative to the viewport so it shouldn't be affected by the 70px of Margin. Fixed position elements are positioned to the viewport As I understand it, the body's margin and padding set the viewport size.

Which would explain why your fixed element is inheriting the 70px. Giving your.

Fixed Position Element Relative to ViewPort or Body?

The body's padding will make sure the rest of the content is pushed down below the fixed element since that element has been removed from the normal flow of the page. I wish I could give a better explanation of how viewport, body, and html elements interact with each other.

But, that's your fix. Posting to the forum is only allowed for members with active accounts. Please sign in or sign up to post. I forgot my password. Zach Allan 19, Points. Any help would be really appreciated! Caleb Sylvest 7, Points. Caleb Sylvest Caleb Sylvest 7, Points. Hi Zack, The short answer is that fixed position elements are relative to the browser window, so that should be an easy way to think about it.The position property specifies the type of positioning method used for an element static, relative, fixed, absolute or sticky.

The position property specifies the type of positioning method used for an element. Elements are then positioned using the top, bottom, left, and right properties.

However, these properties will not work unless the position property is set first. They also work differently depending on the position value. An element with position: static; is not positioned in any special way; it is always positioned according to the normal flow of the page:. An element with position: relative; is positioned relative to its normal position.

Setting the top, right, bottom, and left properties of a relatively-positioned element will cause it to be adjusted away from its normal position. Other content will not be adjusted to fit into any gap left by the element. An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled. The top, right, bottom, and left properties are used to position the element.

An element with position: absolute; is positioned relative to the nearest positioned ancestor instead of positioned relative to the viewport, like fixed. However; if an absolute positioned element has no positioned ancestors, it uses the document body, and moves along with page scrolling.

Note: A "positioned" element is one whose position is anything except static. An element with position: sticky; is positioned based on the user's scroll position. A sticky element toggles between relative and fixeddepending on the scroll position. It is positioned relative until a given offset position is met in the viewport - then it "sticks" in place like position:fixed.

Netdom reset

Note: Internet Explorer, Edge 15 and earlier versions do not support sticky positioning. Safari requires a -webkit- prefix see example below. You must also specify at least one of toprightbottom or left for sticky positioning to work.

In this example, the sticky element sticks to the top of the page top: 0when you reach its scroll position. The z-index property specifies the stack order of an element which element should be placed in front of, or behind, the others. Because the image has a z-index of -1, it will be placed behind the text.

Finding Element Nodes from Mouse Position

Note: If two positioned elements overlap without a z-index specified, the element positioned last in the HTML code will be shown on top. Set the shape of an element This example demonstrates how to set the shape of an element. The element is clipped into this shape, and displayed. If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail:. Margins Margin Collapse. Float Clear Float Examples.

Navbar Vertical Navbar Horizontal Navbar. Example div. This is a heading Because the image has a z-index of -1, it will be placed behind the text. Example Bottom Left.While this may be hard to believe, especially if you are familiar with how layout in HTML works, elements are positioned in some sort of sensible manner.

Those manners are many and often confusing to discuss here, but there is some logic behind the position of everything you see. With great certainty, all elements end up at a particular location. The difficult thing to grasp is that, the location of an element is something you indirectly define by fiddling with parent elements, floats, paddings, margins, positions, and more. Very rarely will you set the position of an element using a precise X and Y value.

In times that you do, those values are relative to whatever container you are in - a container whose own position may be set through mysterious ways. In this short tutorial, you will see the code for getting the exact position of an HTML element and learn why it works the way it does.

This will be a good one, so let's get started! It returns an object containing an x property and a y property. You should also ensure you update the various position values when your browser is scrolled or resized. The updatePosition function helps you reset any values accordingly when those situations happen:. What you've seen here is just the basic usage. That is still an incomplete picture on how it works, so let's fix that in the next section. To see the code from the previous section at work, here is a live example.

When you run the example, you will see a dialog that looks as follows:. This dialog tells you the position of an element you are looking for, and that element is the image of Nyan Cat with an id of imageLocation. The returned position is an x value of and a y value of If you use a 3rd party tool to measure the position from the top-left corner of your viewport to the top-left corner of the image, you will see that the position exactly matches what our code showed:.

Let's talk a little bit more about this example. Like the example page's text mentions, the image is located inside a container that is absolutely positioned and has all kinds of CSS shenanigans applied to it. Despite that, our code was able to get the exact position. You can even try resizing your browser and scrolling the page around. The position will still be properly returned.

Right now, you've seen the code. You've seen the example. All that is left is for you to understand why the code works. Before looking at each line in detail, let's talk a little bit about how layout for an element works in HTML. For the most part, an element's position is partly determined by its own CSS properties, but it is largely determined by its parent's CSS properties. The properties that I am referring to are primarily the paddingmarginand border.

A great visualization of how those properties affect layout is by looking at the box model view for the element named container from our example:. Notice how the values for paddingmarginand border are represented in the diagram. At the far-left and top, you can see the left and top CSS properties represented because this element is absolutely positioned.


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