![]() However, whether the webkit browsers or the other browsers are closest to the spec is debatable, for as BoltClock noteed in his comment, the spec does not seem to indicate whether visibility on the html element should or should not affect the propagation of the background property). In my opinion, the Chrome and Safari rendering would seem to be the most intuitive (what I might expect as a designer), as I would not expect the background-color to render (since the element is hidden), but at the same time, if I set a child as visible, then I would expect the browser to let me scroll on behalf of that child even if the html wrapper is set to visibility: hidden. Obviously, the background point relates not at all to your scroll issue, but does address the point of your overall question on how the property affects the html element. So it may be that the visibility: hidden property is part of your issue. This seems to indicate that it is not properly staying in the layout per the spec. The background-color for the html element does not render (like Chrome) but there are also no scroll bars showing up for the div element inside. So Chrome is not propagating the background property to the canvas, presumably because its visibility was set to hidden. It does not render the background-color on the html, but it does allow the div to show and it shows the scroll bars. These browsers also allow elements set back to visible inside to show as the spec for visibility indicated, so the div is showing and can scroll. "the background of the canvas and its background painting area extends As BoltClock noted in his comment, this actually may be expected, since the background of the html is ( according to spec) to become. ![]() Makes visibility: hidden on the html element not render the body (as it should) but still shows some rendering of the html itself as it shows the background-color. Also, any children set to visible should be visible within a hidden element. This implies to me that it should not affect scrolling if an element ends up causing scroll behavior. View it on our website At first, on our webpage, there is the overview of our blog then there is the example of DIV only visible on hover. When a div becomes visible on hover, it gives your site a nice look. They are usually used to show/make a DIV visible on hover. Let's create a CSS class invisible having the visibility: hidden style.According to the spec, the visibility property should still affect layout. DIV only visible on hover is made with HTML and CSS. When the object literal is assigned to the :class, Vue would apply the "className" as a class to the element if boolValue is true. Unfortunately, you cannot use v-show directive because it applies only display: none style.īut a viable solution is to use :class binding, which is pretty flexible in Vue. What if you need to hide the element's content while keeping the space it occupies? The CSS style that hides the element content but keeps its space is visibility: hidden. ![]() Thus toggling the element's visibility using v-show is relatively cheap (compared to v-if described above), so you might use this directive with an element which visibility is toggled often. V-show, when assigned with false, applies display: none inline style and hides the element visually and makes almost no modifications to the DOM. However, the second is hidden because Vue applies display: none inline style, thanks to v-show="false".ĭisplay: none applied to an element makes the element disappear completely.Ĭhallenge: how can you implement in Vue a button that toggles the display of an element? Share your solution in a comment! 2.1 When to use v-show The first element is visible on the screen. ![]() V-show is a built-in directive that shows or hides the element visually: ![]() Often it's useful to keep the element present in the DOM, but have it visually hidden using CSS styles. For example, to show/hide a section having detailed information about an entity.Ĭhallenge: would v-if render the element if assigned with 0? What about '0'? 2. You'd use v-if on the elements which visibility isn't toggled too often and is initially hidden. But it has a low initialization cost if the element is initially hidden. V-if toggling is relatively expensive (since each time you change v-if value the element is inserted/removed from DOM, as well event listeners are initialized/uninitialized) compared to v-show (presented in the next section). When v-if directive is assigned with false, Vue also doesn't initialize the event listeners on the element, even if you explicitly use the event directives. In simple words, v-if directive allows you to show or hide the element just by inserting or not the element into the DOM. The second element, however, isn't rendered into theĭOM because v-if="value2" was supplied with a false. The first element is rendered because v-if="value1" was supplied with a true value. ![]()
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