当与html、body或组件根等顶层元素一起使用时,:has()选择器允许你根据这些元素中的特定条件应用样式,从而为你提供了广泛的可能性。 例如,您可以根据文档中的<select>元素切换主题: body:has(option[value="dark"]:checked) { --primary-color: #e43; --surface-color: #1b1b1b; --text-color: #eee; } ...
The preceding code contains three CSS rules, with the last two rules using custom attributes to select elements: .list and #msg. .list is a class selector. Each HTML element that contains a class attribute set to list gets the styles that are defined within this selector. #msg is an ID...
new MiniCssExtractPlugin({ insert: function (linkTag) { var reference = document.querySelector("#some-element"); if (reference) { reference.parentNode.insertBefore(linkTag, reference); } }, });A new <link> element will be inserted before the element with id some-element....
Arbitrary variants are just format strings that represent the selector, wrapped in square brackets. For example, this arbitrary modifier selects an element only when it is the third child: 可以使用 [] 定义任意的选择器<li class="[&:nth-child(3)]:underline">{item}</li> Arbitrary variants c...
type === 'ClassSelector' && node.name === 'example') { node.name = 'hello'; } }); // generate CSS from AST console.log(csstree.generate(ast)); // .hello{world:"!"} Syntax matching: // parse CSS to AST as a declaration value const ast = csstree.parse('red 1px solid', ...
The cascade is the referee that determines which properties are applied to a given element, with considerations to thespecificityof the selector and possible inherited properties. We need a referee to determine which styles take precedence in the event of a rule conflict. ...
:focus, when a user clicks or taps the element, or selects it with the tab key :active, when a user clicks on the element :target, when a user clicks on a different elementOf the pseudo-classes above, :hover is the most common, and it's what we’ll be covering in this post. ...
it might be necessary to have finer control over the append target or even delaylinkelements insertion. For example this is the case when you asynchronously load styles for an application that runs inside of an iframe. In such casesinsertcan be configured to be a function or a custom select...
If it’s found, but the object associated with it doesn’t provide a paint source, the element() function represent an invalid image. If the ID isn’t found in the map at all, it’s then looked for in the document as normal. This reuse of the ID selector matches Moz behavior....
CSS selector matching<link>and<style>nodes to collect data from. The default value includes all style and link nodes. Example getCssData({// Include only <link rel="stylesheet"> nodes// with an href that does not contains "bootstrap"include:'link[rel=stylesheet]:not([href*=bootstrap])...