Javascript getcomputedstyle margin. The benefit of this approach is that it works to retrieve the value set in CSS, regardless of that value being set in the style attribute of the element or in a linked stylesheet, which I think Konsolenfreddy 's approach is limited by. marginTop; And then execute your function Jun 14, 2011 · Learn how to retrieve CSS values using JavaScript with examples and solutions provided by the Stack Overflow community. About To get the computed values of a style for an HTML element, you use the browser webapi window. jQuery's offset() function detects margins correctly. currentStyle['marginTop'] it is camelCase. This is done using the style property of the element and assigning values to the CSS properties you want to modify. getComputedStyle () method in JavaScript. So why not to read the width of an element with getComputedStyle, like this? Jul 23, 2025 · In JavaScript, it is often necessary to retrieve the actual width and height of an HTML element. * @param : prop - The Property for which to get the value * @returns : The returned style value of the element **/ var getCurrentStyle = function (ele, prop getComputedStyle が返すオブジェクトは読み取り専用で、 要素のスタイルを調べるのに使用することが出来ます。 (<style>要素、または外部スタイルシートによる設定が含まれます) element. getComputedStyle. Comparison with getComputedStyle () Window. style. height Rendered height is The getComputedStyle function allows you to get the actual values of an element's CSS property, even from a CSS file in JavaScript. And also, there’s a limitation in CSS that forbids applying geometry-changing styles in :visited. css () method in jQuery. style. Mar 24, 2023 · JS Computed Style is a method in JavaScript which allows developers to get the final computed style of an element. Description The getComputedStyle() method gets the computed CSS properties and values of an HTML element. For example, to set the left margin of an element, the setProperty method takes ?margin-left' as the first argument, and in the Jun 3, 2025 · The CSSStyleDeclaration. When I use only heigh In this tutorial, you will learn how to get the current computed dimension of an element, including width and height, in JavaScript. getComputedStyle () method The global getComputedStyle() method returns an object containing the values of all CSS properties of an element. Dec 8, 2008 · Note that when using document. Nov 4, 2020 · 感想 margin を含んだ値で取得できる API が無いっぽいのは意外だった。 位置を取得できる offsetTop や clientTop も margin を含まないっぽいので、margin を含んだ値を使いたいときは style から取得するしかなさそうな印象でした。 But, due to margin collapsing, the layout shows a margin of 10px before the bounding client rectangle, and a margin of 5px after, i. The Window. See this answer. offsetHeight; // gets the total height value inclusive of all paddings & margins // The following is to get the padding-top, padding-bottom, margin-top, margin-bottom values var paddedHeightTop = window. This method returns an object that includes the current computed values for all CSS properties. You can fix this by using querySelector instead: var arrows = document. 04 Jun 23, 2022 · How to get the height of an element minus padding, margin, border widths with JavaScript? To get the height of an element minus padding, margin, border widths with JavaScript, we get the offsetWidth and offsetHeight and subtract them by the padding and border width and height. Feb 14, 2024 · TypeScript enhances JavaScript by adding types, and this is especially helpful when working with complex APIs like window. . Jul 23, 2025 · Output: Example 2: In this example, we can get the current value of a CSS property using the window. The unexpected part for me here is that the parent element has z-index: 100; Should getComputedStyle return 10 Firefox documentation says: In Firefox, properties with the value auto return the used value, not the value auto. Jun 5, 2020 · The most important consequence of this from a pure JavaScript point of view is that computed dimensions are completely zeroed, especially heights. The returned objects are different in each case, and I'm not sure how well either work with elements and styles created using Javascript, but perhaps they'll be Sep 13, 2022 · Does it have to do with the dynamic nature of getComputedStyle, aka is 'auto' the initial value (the above lines get called in the componentDidRender lifecycle event of a Stencil web component) and the width on computedStyle actually was updated after being shown initially? May 20, 2023 · Additionally, we access the computed margins using getComputedStyle() and convert them to numbers using parseFloat(). paddingTop) + parseFloat(computedStyle. And then we get the margin top value with style. style) coming from css (internal/external) unless you use the built in method call getComputedStyle in javascript. Finally, we use getPropertyValue() method to retrieve the values of padding-top, padding-right, padding-bottom, and padding-left properties. You need to use the window. The getComputedStyle () method returns a CSSStyleDeclaration object. Jun 16, 2023 · The Style marginTop property in HTML DOM is used to set or return the top margin of an element. Nov 23, 2015 · In essence, I am trying to use the getComputedStyle to get a property value without having access to the element (directly). marginTop in pixels. But as we know from the chapter Styles and classes, we can read CSS-height and width using getComputedStyle. getComputedStyle Don’t take width/height from CSS We’ve just covered geometry properties of DOM elements, that can be used to get widths, heights and calculate distances. marginTop = "length|percentage|auto|initial| inherit" Return Values: It returns a string value that represents the top margin of an element Property Values: length: It is used to Dec 26, 2015 · The HTMLElement. getPropertyValue('padding-top'); Oct 12, 2020 · 4. Mar 17, 2017 · To get the current calculated style of the object, you use either the currentStyle property (Microsoft) or the getComputedStyle function (pretty much everyone else). getComputedStyle() method to get the computed style of an element. getComputedStyle (element): The Window. Note 3 Use this style property instead of the The setAttribute () Method, to prevent overwriting other properties in the style attribute. style only returns inline styles: The HTMLElement. offsetHeight offsetHeight - Returns the height of an element, including borders and padding if any, bu Use element. This function returns an object that contains all the computed styles, including values from external stylesheets, inline styles, and browser defaults. getComputedStyle(document. Aprende a leer estilos CSS con JavaScript usando getComputedStyle(). Jun 25, 2025 · JavaScript can read Computed CSS values using the built-in getComputedStyle() method. Still I can't figure out how to set the correct height to a div that can include: box-sizing padding margin border something else that may Nov 19, 2021 · I'm in such a situation where i need to wait till the image gets loaded once the image gets loaded i need to gets its computed height so that i can set the yellow color selector accordingly. getComputedStyle(elmnt, null). querySelector("a") to document. querySelector(". So why not to read the width of an element with getComputedStyle, like this? Sep 19, 2024 · In JavaScript, the getComputedStyle () function allows us to retrieve the CSS properties applied to a particular HTML element. This method shows you the real styles the browser is using—even if they came from a class, a stylesheet, or were inherited from a parent element. getComputedStyle(). getComputedStyle() method returns a live read-only CSSStyleProperties object containing the resolved values of all CSS properties of an element, after applying active stylesheets and resolving any computation those values may contain. Lets see the differences between each and when they should be used. The HTMLElement. getComputedStyle () method gives the values of all the CSS properties of an element after applying the active stylesheets and resolving any Oct 13, 2025 · The CSSStyleDeclaration interface is the base class for objects that represent CSS declaration blocks with different supported sets of CSS style information: CSSStyleProperties — CSS styles declared in stylesheet (CSSStyleRule. Apr 12, 2023 · To get the height of an element, there are five common methods in JavaScript. Only the last method gives the correct rendered height instead of the layout height. Is there any way to get it to force it to always return a pixel value? Dec 19, 2016 · 2 In the first example you are getting the computed left margin, which will give you whatever the margin is after the stylesheet has cascaded. getPropertyValue ("border") is returning "0. getElementById('measureTool'). marginTop It is used to set the marginTop property. Как правило, существует два способа May 3, 2015 · I can't get window. However, window. Pass it reveal[0] and it will work. style can get only the inline styles. innerHTML`. This guide provides an overview Get the current computed outer width (including padding, border, and optionally margin) for the first element in the set of matched elements or set the outer width of every matched element. You can use getComputedStyle() to get all the properties and then use getPropertyValue('margin') to get the specific property that you I get empty strings in both cases. It can be accessed as follows: CSSStyleDeclaration allows styling HTMLElement s. getComputedStyle() returns resolved values, while computedStyleMap() returns computed values. margin to change the margin of an individual element. 994318px solid rgb (255, 0, 0)" How do I get border-width using ComputerStyle? Jul 11, 2025 · The getComputedStyle () method is used to get all the computed CSS property and values of the specified element. Dec 28, 2018 · The problem is that when you call getElementsByClassName, you're getting a NodeList, which is a type of array, rather than a single element. I would appreciate if someone could provide some insight on how I can read top margin property off the html and body elements. The following figure shows the CSS box model: a block element with content, padding, border, and margin: Use the following methods to get width and height of each of those boxes: JavaScript can't read any element style property (elem. object. currentStyle. It takes the property name and value in the arguments and sets that property with the value provided. getComputedStyle (box). marginBottom return directly 5px, the real used value “after all calculations have been performed”, instead of the specified 15px? The . Syntax: window. css() method is a convenient way to get a computed style property from the first matched element, especially in light of the different ways browsers access most of those properties (the getComputedStyle() method in standards-based browsers versus the currentStyle and runtimeStyle properties in Internet Explorer prior to version 9) and the different terms browsers use for certain Aug 8, 2014 · Here's the solution that works for both cases of box-sizing: content-box and border-box. FOr example getCssByRule('margin-left') will produce an array with all the elements in the page that have Dec 4, 2011 · How to get and set padding/margin values for DOM elements at specific location of the outer margins and paddings using jquery plugin getting the correct values. See our Full Style Object Reference. These are usually the same, but for 4 Use getComputedStyle function, Computed style contains all the CSS properties set to an element. To access the styles from stylesheets use Window. css(element, 'property') や jQuery(selector). How can I get it using JavaScript? I am not using jQuery, so I'm looking for pure JavaScript solutions. getComputedStyle () method. getPropertyValue('left') . The getComputedStyle() method (IE < 9: currentStyle property) corresponds to the rendered on-page style of an element after all stylesheets were applied. Jul 27, 2024 · getComputedStyle is one of a kind. getComputedStyle work Asked 10 years ago Modified 10 years ago Viewed 2k times Set and get CSS styles of elements Get the computed style properties or set CSS properties for an element. on Jun 3, 2020 StephenChips Feb 9, 2012 · How can I get the padding or margin value in pixels using jQuery? You can get the padding or margin value in pixels using the . This method returns the CSS properties applied to the specified element after applying active stylesheets and resolving any basic computations. getPropertyValue() method interface returns a string containing the value of a specified CSS property. Then we call getComputedStyle with p to return an object with the computed styles. css('property') で取得している人もい Using the setProperty method for the left margin of an element The setProperty method in JavaScript is another way to set any new or existing property of an element. getElementById('div'),null) . In this example, the margin will be 10% on the top, bottom, left, and right sides. This property can take from one to four values: One value, like: div {margin: 50px} - all four margins will be 50px Two values, like: div {margin: 50px 10px} - the top and bottom margins will be 50px, left and right margins will be 10px Three values, like: div {margin: 50px 10px 20px}- the top margin will be 50px, left This article explains how to obtain the width and height of HTML elements using plain JavaScript, discussing various methods and their implications. It's not jQuery but, in Firefox, Opera and Safari you can use window. The element. So why not to read the width of an element with getComputedStyle, like this? Dec 8, 2008 · Note that when using document. css('margin-top')) But I need it in pure Javascript, I have tried the following code Mar 8, 2011 · 115 I have a textarea in my HTML. Apr 2, 2025 · Learn how to use JavaScript's getComputedStyle method effectively with examples and detailed explanations. Example: Sep 5, 2023 · Discover the magic of JavaScript GetComputedStyle in web development. You will still find that property in the computed styles. In this article, we’ll learn how to use getComputedStyle() with full examples and clear explanations. " May 27, 2022 · getComputedStyle () メソッド window オブジェクトの getComputedStyle() メソッドを使うと、レンダリング結果を表す CSS プロパティ情報をオブジェクトとして取得することができます。 getComputedStyle() メソッドは対象となる HTML 要素のオブジェクトを引数に取ります。 JavaScript, css acquisition value method: style, getComputedStyle, currentStyle, Programmer Sought, the best programmer technical posts sharing site. querySelector("p"), and you'll notice a difference in the margin-top and margin-bottom default computed values. Feb 5, 2025 · A comprehensive guide to the JavaScript getComputedStyle() method, explaining how to retrieve the final, rendered CSS styles of any HTML element. The rendered value of each CSS property for a given element or box is the result of a calculation based on stylesheet definitions, inheritance, the cascade, dependencies, unit conversion, and the display environment. max(0, marginBottom - marginTop). getComputedStyle to get the style that was computed, but not set through JavaScript, as HTMLElement. getComputedStyle() to get the computed style of the element, which includes all styles applied to the element, including padding. getComputedStyle(div,null). This information can be useful in a variety of scenarios, such as setting the size of an element dynamically, centering an element on the page, or determining the size of an element for animation purposes. Explore how to harness its potential, common FAQs, and practical insights. Enhance your web development skills with this step-by-step tutorial. Dec 5, 2013 · 0 It's not jQuery but, in Firefox, Opera and Safari you can use window. height jQuery ( height, innerHeight, outerHeight ) clientHeight, offsetHeight, scrollHeight getComputedStyle getBoundingClientRect (). Sep 29, 2022 · But getComputedStyle does not give access to that color, because otherwise an arbitrary page could find out whether the user visited a link by creating it on the page and checking the styles. Please read the description below for further details. The getComputedStyle() method returns a CSSStyleDeclaration object. getComputedStyle(element, pseudoElement) Parameters: element: The element to get the Aug 16, 2021 · The object from getComputedStyle is read-only, and should be used to inspect the element's style — including those set by a element or an external stylesheet. pseudo: A pseudo-element if required, for instance ::before. In the second and third examples you are getting the left margin as specified in the style attribute. Below are the approaches to get the element's actual width and height in JavaScript: Window. Nov 4, 2021 · 0 I was looking at the console. Jun 29, 2022 · console. style), inline styles for an element such as HTMLElement, SVGElement, and MathMLElement, or the computed style for an element returned by Window. dir of an element and came across a number of properties that I was not aware of, so I wanted to get clarification on the margin-block & margin-Inline properties. getComputedStyle() method returns an object containing the values of all CSS properties of an element, after applying active stylesheets and resolving any basic computation those values may contain. getComputedStyle() function is the go-to method for accessing the computed styles of an element in JavaScript. `getComputedStyle` doesn't return a correct style after I dynamically add `<style>` tag to the document whose content is set by `. getComputedStyle (element [, pseudo]) Element: The element to read the value for. Jun 26, 2022 · Don’t take width/height from CSS We’ve just covered geometry properties of DOM elements, that can be used to get widths, heights and calculate distances. Use the window. Aug 11, 2023 · До того, как начнёте изучать способы работы со стилями и классами в JavaScript, есть одно важное правило. Will JavaScript marginBlock always return the margin-top & margin-bottom values and marginInline always return the margin-left & margin-right properties? Jun 3, 2020 · StephenChips changed the title `getComputedStyle` doesn't returns correct style after I dynamically add `<style>` tag to the document whose content is set by `. I need to get the padding numerical value in pixels as either integer or float. Note 2 JavaScript syntax is slightly different from CSS syntax: backgroundColor / background-color. Dec 10, 2019 · The following command window. Nov 13, 2019 · I've read about offsetHeight, clientHeight and scrollHeight. Why doesn't getComputedStyle(). style property contains the style rules directly set on the element. getComputedStyle(element) to get the computed styles for an element and in IE you can use element. log(style. clientHeight; // height with padding elementWidth = element. This is the jQuery code which works fine: alert($("#input"). paddingBottom); elementWidth -= parseFloat(computedStyle Feb 8, 2017 · The problem is that this returns a pixel value in Chrome, but a percentage in FireFox. The iframe looks about 150px May 27, 2025 · Did you realize how many default CSS properties a link had? Update the document. Dec 12, 2024 · The window. Sep 8, 2013 · 28 The result of a getComputedStyle contains a property named "margin", but the property is always an empty string ("") in Mozilla Firefox or Apple Safari; however, in Internet Explorer (and Google Chrome) the margin property contains the expected value (even in IE 6). . Suppose that we want to show a modal overlay on a page. " + objName); And you can get the margin-top value without using getComputedStyle - just do this: var margin = arrows. Each CSS value is accessible through a corresponding property and is of a string type. defaultView. Syntax: It returns the marginTop property. Description The margin property sets or returns the margins of an element. This is difficul Mar 22, 2018 · getComputedStyle() is a JavaScript function that expects a JavaScript object, not a jQuery object. Jul 28, 2021 · I am trying to get the full height of a JSX element in ReactJS using window. The second argument of the getComputedStyle() function is optional and it is for the pseudo element, not the CSS property. Mar 4, 2024 · 最近想找一个可以获取元素高度（包括外边距margin）的方法，原生JS的实现方法一直没有找到，不过有一个方法可以获取元素的边距，记录一下： 语法是（获取元素的属性值）： getComputedStyle (element[,pseudo]) Mar 14, 2017 · JavaScriptでHTML要素のスタイルを知りたいという時、どうしていますか？ jQueryを使っているのであれば jQuery. e. The use of computed style is displaying the element after stylings from multiple sources have been applied. You can target the top, bottom, right and left margin individually using marginTop, m Sep 26, 2017 · I'm using the following function to get all the HTML elements with a certain computedStyle. Conclusion To get margin value of a div in plain JavaScript, we use the getComputedStyle The Window. Individual CSS property values are accessed through APIs provided by the object, or by indexing with CSS property names. But getComputedStyle does not give access to that color, because otherwise an arbitrary page could find out whether the user visited a link by creating it on the page and checking the styles. var computedStyle = getComputedStyle(element); elementHeight = element. 0 on Ubuntu 15. Надеемся, это достаточно очевидно, но мы всё равно должны об этом упомянуть. This includes all styles applied to an element, including those inherited from parent elements, and those set by inline styles or stylesheets. Quest Direct CSS Style Modification With JavaScript, you can directly change the CSS properties of an element. getComputedStyle() メソッドは、アクティブなスタイルシートを適用し、それらの値に含まれる可能性のある基本的な計算を解決した後の、要素のすべての CSS プロパティの値を含むオブジェクトを返します。 Sep 12, 2019 · var totalHeight = elmnt. Jun 2, 2018 · Does getBoundingClientRect(). getPropertyValue("top") returns "auto" instead of the pixel value. JavaScript - element margin size in Vanilla JS 1 contributors 2 contributions 0 discussions Apr 24, 2014 · Looking for reliable method to calculate the element's width/height + margin - padding + border using native JS only and be xbrowser (IE8+) Apr 13, 2024 · Then, we use window. styleのオブジェクトは、指定した要素のスタイルを設定するのに使用される Jun 15, 2021 · To get an element’s padding value using JavaScript, we can use the getComputedStyle and getPropertyValue methods. It does couple of interesting things in the background and has Tagged with webdev, javascript, css, frontend. Unfortunately, I cannot use jQuery in this case, it has to be pure JavaScript. clientWidth; // width with padding elementHeight -= parseFloat(computedStyle. See Also: The CSS Tutorial The CSS Reference The Style Object The HTML Oct 30, 2024 · Accessing CSS Properties To get the computed style of an element in the DOM using TypeScript, you can utilize the window. Does anybody know a workaround? Firefox 42. style property returns a CSSStyleDeclaration object that represents the element's style attribute. getComputedStyle (element) to get the computed styles for an element and in IE you can use element. 6 days ago · The Window. In this tutorial, you will learn how to use the JavaScript getComputedStyle() to get the computed CSS properties of an element. When you access a style property, TypeScript can infer the type based on the CSS definitions, providing autocomplete suggestions and type checking, greatly aiding in development efficiency and reducing Sep 11, 2024 · 要素のスタイルを取得・設定 (getComputedStyle) 要素にスタイルを設定するには style タグの中で設定したり要素毎に style 属性を使って設定することができますが、 JavaScript からはプロパティを使用して要素に対してスタイルを設定できます。また要素に最終的に適用されているスタイルを取得する Jul 27, 2015 · I need to get margin-top of an input with JavaScript. 6 days ago · CSS property value processing For every element in a document tree, the browser assigns a value to every CSS property that applies to that element. getComputedStyle, however I'd like to get the full value, height+margin, but I couldn't find a way. style object should be used to set styles on that element, or inspect styles directly added to it from JavaScript manipulation or the global style attribute. match(/\d+/); JS Fiddle demo. Polyfill to get the current CSS style of element using javascript Visit the link for more info /** * @desc : polyfill for getting the current CSS style of the element * @param : elem - The Element for which to get the computed style. JavaScript may not see the styles applied by :visited. May 28, 2012 · I need the full height of a div, I'm currently using document. width and height properties, while returning values include paddings and borders of element? JavaScript CSS Tool: Convert Margins To Padding Ever wonder what the source of those mysterious gaps on your webpage is, but Web Developer Extension won't Apr 22, 2014 · When trying to get computed style of a element without position defined I get auto. marginTop); to select the element we want to get the margin for with getElementById. Even if do not set a property to an element. For instance, we write const cs = getComputedStyle(element); 1 day ago · Explore various JavaScript methods to retrieve CSS styles associated with a specific class name, including handling multiple stylesheets and complex selectors. By adding the margins to the width and height, we calculate the total size of the element, including its margins. getComputedStyle(element). Jul 23, 2025 · Setting Margin Using Pixels Example 2: In the following example, The HTML div is used to style the paragraph. Since you are getting NaN this is, presumably, not set using the style attribute so is undefined. Descubre cómo obtener los estilos reales aplicados a un elemento, incluso desde clases y reglas heredadas. The border width will be 2px with solid #008000 color and a border radius of 5px. The returned objects are different in each case, and I'm not sure how well either work with elements and styles created using Javascript, but perhaps they'll be useful. getPropertyValue('margin-top') there is a dash, but for div. xuwia7itlntvxfe1x5fk6x2ssa8j3hdylvwynyhy9cv8a