-- YES empty: nothing inbetween --> p::before{font-family:"FontAwesome";content:"\f240";}p:empty::before{content:"\f244";}p{color:silver;}p:empty{color:red;} empty 是什么意思? 当我第一次遇见这个,我对这个被叫做empty的属性也有点困惑,让我们看一下MDN's的定义。 :emptycss伪类表示没...
[CSS3] :empty Selector When the element has empty content, you might want to display some text to idicate the compoent is loading... <!DOCTYPE html><html><head><style>p:empty{width:100px;height:20px;background:#ff0000;}p:empty:after{content:"Loading..., please wait"}</style></...
Select with attribute contains word $('[foo...Select with attribute ends with $('[foo$=ba...Select with attribute exists selector in jQ...Select with class name selector $(".myClass... Select with (:empty) empty selector in jQue......
Description: Select all elements that have no children (including text nodes). version added: 1.0jQuery( ":empty" ) This is the inverse of :parent. One important thing to note with :empty (and :parent) is that child elements include text nodes. The W3C recommends that the <p> element...
Categories:Selectors>Content Filter empty selector Description:Select all elements that have no children (including text nodes). version added:1.0jQuery( ":empty" ) This is the inverse of:parent. One important thing to note with :empty (and :parent) is that child elements include text nodes....
CSS :empty 选择器实例 指定空的 p 元素的背景色:<!DOCTYPE html> <html> <head> <style> p:empty { width: 100px; height: 20px; background: #ff0000; } </style> </head> <body> <p></p> <p>一个段落</p> <p>另一个段落</p> </body> </html>...
1.后代选择器( descendant selector ) l 使用 “” 隔开两个选择器。例如 “ul li” 表示选择 ul 的后代元素 li , li 可以为 ul 的直接子元 素,也可以为 ul 的孙子元素。 2.子代选择器(child selector) l 使用 “>” 隔开两个选择器。例如 “ul>li” 表示选择 ul 的直接子代元素 li,ul 的孙子元...
完整CSS选择器参考手册 指定空的p元素的背景色: <!DOCTYPE html> <html> <head> &
完整CSS选择器参考手册 指定空的p元素的背景色: <!DOCTYPE html> <html> <head> &
:empty is a pseudo selector. It lets you select elements that are empty. :empty { /* do something */ } Empty elements are elements that have nothing in them. It cannot even have a whitespace. <!-- Example of an empty element --> <div></div> Empty elements can have comments thoug...