2018-10-10 18:03:03 -04:00
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id: bad87fee1348bd9aedf06756
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2020-12-16 00:37:30 -07:00
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title: 内联样式的优先级高于 ID 选择器
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2018-10-10 18:03:03 -04:00
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challengeType: 0
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2019-12-13 13:47:57 +08:00
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videoUrl: 'https://scrimba.com/c/cGJDRha'
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forumTopicId: 18252
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2021-01-13 03:31:00 +01:00
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dashedName: override-class-declarations-with-inline-styles
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2018-10-10 18:03:03 -04:00
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---
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2020-12-16 00:37:30 -07:00
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# --description--
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2021-01-08 11:20:48 -08:00
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我们刚刚证明了,id 选择器无论在 `style` 标签的任何位置声明,都会覆盖 class 声明的样式。
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2020-12-16 00:37:30 -07:00
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2021-01-08 11:20:48 -08:00
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其实还有其他方法可以覆盖 CSS 样式。你还记得行内样式吗?
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2018-10-10 18:03:03 -04:00
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2020-12-16 00:37:30 -07:00
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# --instructions--
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2021-01-08 11:20:48 -08:00
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使用行内样式尝试让 `h1` 的字体颜色变白。像这样使用:
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2020-12-16 00:37:30 -07:00
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`<h1 style="color: green">`
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2021-01-08 11:20:48 -08:00
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`h1` 元素需继续保留 `blue-text` 和 `pink-text` 这两个 class。
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2020-12-16 00:37:30 -07:00
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# --hints--
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2021-01-08 11:20:48 -08:00
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`h1` 元素应包含 `pink-text` class。
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2020-12-16 00:37:30 -07:00
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```js
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assert($('h1').hasClass('pink-text'));
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2018-10-10 18:03:03 -04:00
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```
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2021-01-08 11:20:48 -08:00
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`h1` 元素应包含 `blue-text` class。
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2020-12-16 00:37:30 -07:00
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```js
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assert($('h1').hasClass('blue-text'));
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2018-10-10 18:03:03 -04:00
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```
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2021-01-08 11:20:48 -08:00
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`h1` 元素的 `id` 应为 `orange-text`。
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2018-10-10 18:03:03 -04:00
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2020-12-16 00:37:30 -07:00
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```js
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assert($('h1').attr('id') === 'orange-text');
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```
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2018-10-10 18:03:03 -04:00
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2021-01-08 11:20:48 -08:00
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`h1` 元素应含有行内样式。
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2018-10-10 18:03:03 -04:00
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2020-12-16 00:37:30 -07:00
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```js
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assert(document.querySelector('h1[style]'));
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```
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2018-10-10 18:03:03 -04:00
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2021-01-08 11:20:48 -08:00
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`h1` 元素的字体颜色应该为白色。
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2018-10-10 18:03:03 -04:00
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2020-12-16 00:37:30 -07:00
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```js
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assert($('h1').css('color') === 'rgb(255, 255, 255)');
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2018-10-10 18:03:03 -04:00
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```
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2019-12-13 13:47:57 +08:00
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2021-01-13 03:31:00 +01:00
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# --seed--
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## --seed-contents--
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```html
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<style>
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body {
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background-color: black;
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font-family: monospace;
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color: green;
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}
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#orange-text {
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color: orange;
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}
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.pink-text {
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color: pink;
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}
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.blue-text {
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color: blue;
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}
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</style>
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<h1 id="orange-text" class="pink-text blue-text">Hello World!</h1>
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```
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2020-12-16 00:37:30 -07:00
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# --solutions--
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2021-01-13 03:31:00 +01:00
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```html
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<style>
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body {
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background-color: black;
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font-family: monospace;
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color: green;
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}
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#orange-text {
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color: orange;
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}
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.pink-text {
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color: pink;
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}
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.blue-text {
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color: blue;
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}
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</style>
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<h1 id="orange-text" class="pink-text blue-text" style="color: white">Hello World!</h1>
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```
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