123 lines
2.7 KiB
Markdown
123 lines
2.7 KiB
Markdown
---
|
||
title: CSS3 Transitions
|
||
localeTitle: CSS3过渡
|
||
---
|
||
## CSS3过渡
|
||
|
||
如果您希望您的应用或网页更具动态性和美观，则使用CSS3 **过渡**非常有用。
|
||
|
||
实际上，转换允许您以**平滑的**方式更改属性（ `width` ， `color` ，...）值。
|
||
|
||
`transition`属性是`transition-property` ， `transition-duration` ， `transition-timing-function` ， `transition-delay`的简写属性，语法如下：
|
||
|
||
```css
|
||
transition: transition-property transition-duration transition-timing-function transition-delay
|
||
```
|
||
|
||
例如 ：
|
||
```
|
||
transition: width 2s ease-in-out 1s;
|
||
```
|
||
|
||
### 属性描述
|
||
|
||
#### `transition-property`
|
||
|
||
指定应应用转换的属性的**名称** ：
|
||
|
||
* `background-color`
|
||
* `color`
|
||
* `width`
|
||
* `height`
|
||
* `margin`
|
||
* `border-radius`
|
||
* 等等 ！
|
||
|
||
例如 ：
|
||
```
|
||
transition-property: width; /* means the transition applies on the width */
|
||
```
|
||
|
||
#### `transition-duration`
|
||
|
||
指定转换应**采用** **的秒数或毫秒数** ：
|
||
|
||
例如 ：
|
||
```
|
||
transition-duration: 2s /* means the transition effect last 2s */
|
||
```
|
||
|
||
#### `transition-timing-function`
|
||
|
||
指定过渡效果的**速度曲线** 。因此，您可以**在其持续时间内**更改**转换的速度** 。
|
||
|
||
以下是最常用的值：
|
||
|
||
* `linear`
|
||
* `ease`
|
||
* `ease-in`
|
||
* `ease-out`
|
||
* `ease-in-out`
|
||
* `cubic-bezier(n, n, n, n)`
|
||
|
||
例如 ：
|
||
|
||
```css
|
||
transition-timing-function: linear
|
||
```
|
||
|
||
注意：上面的所有值实际上都是特定的`cubic-bezier` 。例如， `linear`相当于`cubic-bezier(0.25,0.1,0.25,1)`
|
||
|
||
您可以[在这里](http://cubic-bezier.com/)试验并了解有关_Cubic Bezier的_更多信息
|
||
|
||
#### `transition-delay`
|
||
|
||
转换**开始**时以**秒或毫秒**指定。
|
||
|
||
例如 ：
|
||
```
|
||
transition-delay: 1s /* means wait 1s before the transition effect start */
|
||
```
|
||
|
||
### 如何使用过渡？
|
||
|
||
您可以通过两种方式编写转换：
|
||
|
||
#### 使用速记属性（ `transition` ）
|
||
|
||
```css
|
||
div {
|
||
width: 200px;
|
||
transition: all 1s ease-in-out;
|
||
}
|
||
|
||
div:hover {
|
||
width: 300px;
|
||
}
|
||
```
|
||
|
||
#### 为所有过渡属性赋予值
|
||
|
||
```css
|
||
div {
|
||
width: 200px;
|
||
transition-property: width;
|
||
transition-duration: 1s;
|
||
transition-timing-function: ease-in-out;
|
||
}
|
||
```
|
||
|
||
注意：两个例子都是**等价的**
|
||
|
||
### 例子
|
||
|
||
以下是一些包含简单过渡的简单笔：
|
||
|
||
* [基本过渡](https://codepen.io/thomlom/pen/gGqzNp)
|
||
* [过渡+ JavaScript](https://codepen.io/thomlom/pen/JrxZKz?editors=1111)
|
||
|
||
#### 更多信息：
|
||
|
||
* [w3schools：CSS3过渡](https://www.w3schools.com/css/css3_transitions.asp)
|
||
* [MDN Web文档：使用CSS过渡](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Transitions/Using_CSS_transitions)
|
||
* [DevTips：CSS Transition](https://www.youtube.com/watch?v=8kK-cA99SA0) |