To reproduce the problem in the following example, you’d need to hover over any menu item and then click on it. With visible value, this inner element will become visible - which could not be what we would expect! If the visibility: visible is only used to restore the visibility, this can lead to an issue with two independent components, where we could need to hide the wrapping one, but the one inside will have some descendant’s visibility restored. If you would happen to have one or would see a post somewhere describing one - let me know! The Problem I won’t provide the use cases in this article, as this is a bit out of scope, but maybe one day I will write about some of them. While we could use this aspect of the property to achieve something good, quite often, this could lead to unexpected results. We can play with the above example, changing which property is used for hiding or showing the elements - visibility is a noticeable outlier! Furthermore, descendants of the element will be visible if they have visibility: visible. hidden The generated box is invisible (fully transparent, nothing is drawn), but still affects layout. Here is how it is defined in the specs (emphasis is mine): visible The generated box is visible. If a parent element is hidden with it, but then we will set visibility: visible on any of the descendant elements, this descendant’s visibility will be restored, and it will appear where it should be, regardless of its parent visibility value. When we’re hiding an element with display: none and opacity: 0, all of their children also become hidden, and there is no way to restore them. I can recommend reading this article by Scott O’Hara - “ Inclusively hidden”, if you’d want to learn more on how various ways of hiding content affect accessibility. opacity: 0 - similarly to visibility an element keeps its place in the layout, but continues to receive focus & events, and will be present in the accessibility tree.
visibility: hidden - an element is still present in the layout, but is not visible, does not receive focus, and is absent in the accessibility tree.display: none - completely removes an element from the layout, removing it from tab order, accessibility tree, and so on.By looking at the differences, we could have a wider understanding of when we could use something, and when a certain approach would make more sense compared to others. All three properties can be used to “hide” an element: I find it useful to learn how something works by comparing it with other similar things. Visibility property can often be compared to two other properties: display, and opacity. It can lead to different properties being hard to distinguish from each other, leading to misconceptions or misunderstandings, resulting in using an incorrect tool for its job, which, in place, could lead to bugs. Var primar圜olor = document.CSS is known for having multiple ways to achieve any given goal. Let’s see an example of CSS Visibility hidden − Var primar圜olor = document.getElementsB圜lassName('primary') īefore clicking ‘Hide Primary Colors’ button −Īfter clicking ‘Hide Primary Colors’ button − Let’s see an example for CSS Display none − To the user, there might not seem any difference in using any of the two properties, but there is.ĬSS Display − none does not render the element on the document and thus not allocating it any space.ĬSS Visibility − hidden does renders the element on the document and even the space is allocated but it is not made visible to the user. We can hide or remove an element in a HTML document with CSS Visibility and CSS Display properties respectively.
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