So I will show you most of those methods to get the height and width of an HTML element. Viewport is the section of the browser window where webpages are rendered. Get the current computed width for the first element in the set of matched elements or set the width of every matched element..width() Description: Get the current computed width for the first element in the set of matched elements. To get the width and height of an element in Javascript: Get the element itself first - var element = document.getElementById ("ID"); Then, there are 3 different sets of dimensions. More precisely, innerWidth returns the width of the window's layout viewport.The interior height of the window—the height of the layout viewport—can be obtained from the innerHeight property. 3. getBoundingClientRect() method. If you use viewport length units in your CSS within the iframe document, 1vh will be 1% of the height of the iframe, and 1vw will be 1% of the width of the document. A solution that would conform to W3C standards would be to create a transparent div (for example dynamically with JavaScript), set its width and height to 100vw/100vh (Viewport units) and then get its offsetWidth and offsetHeight. To get the width and height of the element you should use the corresponding property names. You're using the wrong method calls. If you want to get the total width and height of the user's . Get viewport/window size (width and height) with javascript. Space within the browser window is known as the 'viewport' affected by the monitor . And innerWidth gets the width of it. In fact there are several viewport units you can play with as well. <!DOCTYPE HTML>. // viewport width excluding scrollbar document.documentElement.clientWidth Getting viewport height. The getBoundingClientRect() method returns an object holding the size of an element and its position relative to the viewport. 4 get window size javascript . jQuery uses the Math.max of 5 numbers to calculate this. This includes the width of the vertical scroll bar, if one is present. This simply means 100 percent of the viewport height. When making calculations you have to distinguish between viewport, device, and document. After that, the element can be removed again. If pageHeight is bigger than the window inner height, then a vertical scrollbar is displayed.. 4. Use this method to get the full browser viewport width and height. Next, I combine this viewport to media rules to optimize the layout where the viewport rule is nested inside. The width can be obtained using the innerWidth property. NOTE: These properties will round the value to an integer. The innerHeight property is used to return the height of the device. The following picture displays the CSS box model that includes a block element with content, padding, border, and margin: - The window outer size measures the entire . Width of the Viewport Window window.innerWidth gives the width of viewport window including the width of the vertical scrollbar also. Zooming may cause values to be 1px off due to native rounding. This method gets CSS viewport @media (width) and @media (height) which include scrollbars width/height. But it's important to understand the difference between what sizes you are getting as it may cause you some trouble. gets CSS viewport @media (width) and @media (height) which include scrollbars initial-scale and zoom variations may cause mobile values to wrongly scale down to what PPK calls the visual viewport and be smaller than the @media values zoom may cause values to be 1px off due to native rounding undefined in IE8- Improve this answer. Similarly, if the viewport width is smaller than the height, the value of 1vmin will be equal to 1% of the viewport width. iframe { width: 50vw; } If the iframe is set to 50vw, it will be 50% of the width of the 1200px parent document in our example above, or 600px, with 1vw being 6px. For decent cross-browser support, the Math.max of the 3 document.documentElement properties seems to suffice. All Languages >> Javascript >> javascript get viewport height and width "javascript get viewport height and width" Code Answer's. JS get viewport width . The screen size is the size of your entire screen (or monitor), while the available screen size is the size of the monitor excluding the OS taskbars or toolbars.. You should include the following <meta> viewport element in all your web pages: <meta name="viewport" content="width=device-width, initial-scale=1.0"> This gives the browser instructions on how to control the page's dimensions and scaling. Summary: in this tutorial, you will learn how to get the current computed dimension of an element, including width and height.. The trick is to store the viewport value in a CSS variable and apply that to the element instead of the vh unit. Sometimes, however, what you want to display as full viewport height is not the only thing you want on the viewport at a point in time. Prerequisite - How to get the width of device screen in JavaScript ? 10vmin will resolve to 10% of the current viewport width in portrait orientations, and 10% of the viewport height on landscape orientations. <iframe> Inside an iframe, the visual viewport is the size of the inner width and height of the iframe, rather than the parent document. Example: window.screen.availWidth; window.screen.availWidth; Note: The availWidth, availHeight properties excludes the device taskbar. The read-only innerHeight property of the Window interface returns the interior height of the window in pixels, including the height of the horizontal scroll bar, if present.. The task is to find the height of the working screen device using JavaScript. A viewport is the "window" that's open on the document: how much of it you can see and where. The difference between .css( "width" ) and .width() is that the latter returns a unit-less pixel value (for example, 400) while the former returns a value with . Similarly, the vw unit is 1% of the layout viewport's width. window.innerWidth & window.innerHeight gives the width & height of the viewport window. We can use window.innerHeight to get the viewport height, and window.innerWidth to get viewport width. JavaScript provides a native API to get the width and height of a viewport. Using availHeight and availWidth. var viewportWidth = window.innerWidth + "px"; var viewportHeight = window.innerHeight + "px"; It will just get you a number so you have to prefix it with px. Syntax let intViewportHeight = window. Example 1: This example uses window.innerHeight property to get the height of the device screen. This answer is not useful. get the height and width of an HTML element or div element from the CSS style height and width using JavaScript. window.outerWidth & window.outerHeight gives the width & height of the full browser window that includes the location bar, menu etc. While finding out monitor resolution with javascript can be useful for statistics and certain other applications, often the need is to determine how much space is available within the browser window. April 9, 2021 How to get the width and height of the viewport with vanilla JS Yesterday, we looked at the Element.getBoundingClientRect() method, and how you can use it to get details about an element's position in the viewport.. Today, let's look at how to get the height and width of the viewport itself. Using $(window).height() will not give you the viewport size it will give you the size of the entire window, which is usually the size of the entire document though the document could be even larger.. To get the size of the actual viewport use window.innerHeight . We call setWindowDimensions on with the object returned by getWindowDimensions . Get viewport/window size (width and height) with javascript. For example. // viewport height including horizontal scrollbar window.innerHeight window.innerHeight returns height of window including The property is read only and has no default value. A complete guide to get viewport, device and document sizes with JavaScript. Published in JavaScript June 09, 2020 1 min read Getting viewport width To detect interior width of the window in pixels we can use innerWidth property. Zooming may cause values to be 1px off due to native rounding. But it's important to understand the difference between what sizes you are getting as it may cause you some trouble. This value takes the browser's interface into account and is updated when its visibility changes. Document size methods are often needed in scrolling apps. Viewport Maximum (vmax). To change the width of the window, call one of its resize methods, such as resizeTo () or resizeBy () . While finding out monitor resolution with javascript can be useful for statistics and certain other applications, often the need is to determine how much space is available within the browser window. javascript by Grepper on Jul 31 2019 Donate Comment . A vh unit is 1% of the layout viewport's height. Then you say get the view port dimensions: $ (window).height (); $ (window).width (); Well, that is close to but it is not 100%, because if the user has a minimized window when entering the site that view port size is going to be the constrain size. P.S. This is easily achieved by setting the height of the display to 100vh. element.clientWidth and element.clientHeight - Refers to the dimensions of the element, inclusive of the padding. Home » How to » Get the width and height of the viewport with Vanilla JS Let's look at how to get the height and width of the viewport using Vanilla JS. width: 640px; } Here we had set the width into number value 640px also we can add auto it. Viewport Minimum (vmin) - A percentage of the viewport width or height, whichever is smaller. screen.height doesn't fit either because it returns the height of the whole monitor screen. Show activity on this post. I tried to use $ (window).height (); but it returns the height of my iframe as if I used $ (document).height (). Summary. It does not include the location bar, menu bar, or other toolbars of the browser. We can use window.innerHeight to get the viewport height, and window.innerWidth to get viewport width. Here's a live demo. @Dee2000 what i'm saying or rather what i want to say is that when you measure on a regular page, you get the browser viewport size, but when you measure from inside of an iframe, you get that iframe's document size, not the browser viewport. To get the width and height of an element in Javascript: Get the element itself first - var element = document.getElementById ("ID"); Then, there are 3 different sets of dimensions. All Languages >> Javascript >> javascript get viewport height and width "javascript get viewport height and width" Code Answer's. JS get viewport width . To get the width the height of the viewport, you use the window.innerWidth and window.innerHeight in modern browsers. This unit is based on the larger dimension of . On the page which is loaded in iframe I need to get the height of browser viewport. The read-only Window property innerWidth returns the interior width of the window in pixels. Hopefully, now you have a better idea of how to determine different kinds of sizes. In addition, its distance from the right is less than or equal to the width of the viewport, and ids distance from the bottom is less than or equal to the height of the viewport. javascript by Grepper on Jul 31 2019 Donate Comment . 4 get window size javascript . var viewport_width = window.innerWidth; In CSS, we also have length units based on the viewport size. Space within the browser window is known as the 'viewport' affected by the monitor . We get the window.innerHeight to get the height of the viewport or window. Then we use the useWindowDimensions hook in our App component to render the height and width . @viewport {. April 9, 2021 How to get the width and height of the viewport with vanilla JS Yesterday, we looked at the Element.getBoundingClientRect() method, and how you can use it to get details about an element's position in the viewport.. Today, let's look at how to get the height and width of the viewport itself. Now let's get the inner height of the viewport in JavaScript: // First we get the viewport height and we multiple it by 1% to get a value for a vh unit let vh = window.innerHeight * 0.01; // Then we set the value in the --vh custom property to the root of the document document.documentElement.style.setProperty('--vh', `${vh}px`); The value of innerHeight is taken from the height of the window's layout viewport.The width can be obtained using the innerWidth property. 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