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首先我们看下:has(selector)是什么
匹配包含#xff08;相对于 selector 的 :scope#xff09;指定选择器的元素。可以认为 selector 的前面有一个看不见的 :scope 伪类。它的强大之处是#xff0c;可以实现父选择器和前面兄弟选择器…学习抖音 渡一前端提薪课
首先我们看下:has(selector)是什么
匹配包含相对于 selector 的 :scope指定选择器的元素。可以认为 selector 的前面有一个看不见的 :scope 伪类。它的强大之处是可以实现父选择器和前面兄弟选择器的功能。支持所有的 CSS 选择符。
我们举个例子
css .box1:has(p) {color: red;
}.box1:has(span) {color: blue;
}
.box1:has(a, div) {color: greenyellow;
}
html
bodydiv classbox1pppp/p/divdiv classbox1spanspan/span/divdiv classbox1a有p/a/divdiv classbox1div有div/div/div
/body
结果.box1:has(p) 就是包含 p 标签的.box1 元素。.box1:has(span)就是包含span的元素.box1:has(a, div) 就是 包换 a 和包含div的元素 进阶
知道这个原理后我们在进阶一下看看 子的伪类可不可以用。
css
.box1:has(.red:hover) {color: red;
}
.box1:has(.blue:hover) {color: blue;
}
.box1:has(.yellow:hover) {color: yellow;
}
html
div classbox1div classred变红色/divdiv classblue变蓝色/divdiv classyellow变黄色/div
/div
结果 基于这个特效 我们做一个案例
案例
直接上代码
!DOCTYPE html
html langenheadmeta charsetUTF-8meta nameviewport contentwidthdevice-width, initial-scale1.0titledemo-2/titlestyle* {padding: 0;margin: 0;}.container {width: 400px;height: 400px;border: 2px solid #999;position: absolute;top: 100px;left: 50%;transform: translateX(-50%);display: grid;transition: 0.5s;grid-template-columns: 1fr 1fr 1fr;grid-template-rows: 1fr 1fr 1fr;gap: 5px}.item:nth-of-type(1) {background: red;}.item:nth-of-type(2) {background: rgb(255, 208, 0);}.item:nth-of-type(3) {background: rgb(0, 255, 0);}.item:nth-of-type(4) {background: rgb(166, 255, 0);}.item:nth-of-type(5) {background: rgb(170, 88, 224);}.item:nth-of-type(6) {background: rgba(0, 238, 255, 0.726);}.item:nth-of-type(7) {background: rgb(255, 115, 0);}.item:nth-of-type(8) {background: rgb(86, 75, 241);}.item:nth-of-type(9) {background: rgb(255, 0, 149);}.container:has(.item:nth-of-type(1):hover) {grid-template-columns: 2fr 1fr 1fr;grid-template-rows: 2fr 1fr 1fr;}.container:has(.item:nth-of-type(2):hover) {grid-template-columns: 1fr 2fr 1fr;grid-template-rows: 2fr 1fr 1fr;}.container:has(.item:nth-of-type(3):hover) {grid-template-columns: 1fr 1fr 2fr;grid-template-rows: 2fr 1fr 1fr;}.container:has(.item:nth-of-type(4):hover) {grid-template-columns: 2fr 1fr 1fr;grid-template-rows: 1fr 2fr 1fr;}.container:has(.item:nth-of-type(5):hover) {grid-template-columns: 1fr 2fr 1fr;grid-template-rows: 1fr 2fr 1fr;}.container:has(.item:nth-of-type(6):hover) {grid-template-columns: 1fr 1fr 2fr;grid-template-rows: 1fr 2fr 1fr;}.container:has(.item:nth-of-type(7):hover) {grid-template-columns: 2fr 1fr 1fr;grid-template-rows: 1fr 1fr 2fr;}.container:has(.item:nth-of-type(8):hover) {grid-template-columns: 1fr 2fr 1fr;grid-template-rows: 1fr 1fr 2fr;}.container:has(.item:nth-of-type(9):hover) {grid-template-columns: 1fr 1fr 2fr;grid-template-rows: 1fr 1fr 2fr;}/style
/headbodydiv classcontainerdiv classitem/divdiv classitem/divdiv classitem/divdiv classitem/divdiv classitem/divdiv classitem/divdiv classitem/divdiv classitem/divdiv classitem/div/div
/body
script
/script/html
效果
