id, class, attribute, tag 这些 selector 是有分权重的, 比如 id 比 tag 大. 不管style 的顺序, selector 的方式比较大就会 render 它的 style. 它有一个算分机制, 比如 1 个 class/attr + 10 分, 一个 id + 100 分, element + 1 分, inline + 1000 分。但要注意哦,11 个 class 并不能大...
The CSS[attribute~=value]selector is used to select elements with an attribute value containing a specific word. The example above will match elements with title="flower", title="summer flower", and title="flower new", but not title="my-flower" or title="flowers". ...
CSS [attribute|="value"] Selector The[attribute|="value"]selector is used to select elements with the specified attribute, whose value can be exactly the specified value, or the specified value followed by a hyphen (-). Note:The value has to be a whole word, either alone, like class=...
或者更多的,::after pseudo element用于实现clearfix的功能,也就是在一个元素内容后面增加一个empty space但是却无需额外增加任何html markup来实现clear floats Pseudo Elements vs Pseudo Selectors 之所以我们把::before/::after称之为pseduo elements(而不是selector)是因为他们本身并不会选择到任何存在于page的dom...
Selector [attribute=value] 4.0 7.0 2.0 3.1 9.6Note: For [attribute=value] to work in IE8 and earlier, a <!DOCTYPE> must be declared.CSS Syntax[attribute = value] { css declarations;} Demo More ExamplesExample When an <input type="text"> gets focus, gradually change the width from ...
[attribute|=value] [lang|=en] Selects all elements with a lang attribute value equal to "en" or starting with "en-" [attribute^=value] a[href^="https"] Selects every <a> element whose href attribute value begins with "https" [attribute$=value] a[href$=".pdf"] Selects every <a...
ast.selector({rules:[ast.rule({items:[ast.tagName({name:'nav'})]})]})})],nestedRule:ast.rule({combinator:'>',items:[ast.tagName({name:'a'}),ast.attribute({name:'href'}),ast.pseudoClass({name:'nth-child',argument:ast.formula({a:0,b:2})}),ast.pseudoElement({name:'before'...
//*element/preceding-sibling::elemen 1. 2. 父元素、祖先元素定位 CSS Selector是前向的,不能利用子节点定位父节点 Id定位 Class定位 属性值定位 没有Id和Class的情况下,可以使用其它属性值定位,比如name、type等。 xpath可以使用 ‘and’ 或者 ‘or’ 连接两个属性: XPATH: ...
Valid selector types are: id class tag attribute nthchild nthoftype Root element You can define root element, from which the selector will be created. If root element is not defined, document root will be used: <body><divclass="myRootElement"><!-- targetElement --><divclass="myElement...
选择 元素内部的所有 元素。 1 element>element div>p 选择父元素为 元素的所有 元素。 2 element element div p 选择紧接在 元素之后的所有 元素。 2 [attribute] [target] 选择带有 target 属性所有元素。 2 [attribute=value] [target=_blank] 选择target="_blank" 的所有元素。 2 ...