此文件需要技術審查。看看您能幫什麼忙。
我們的志工尚未將此文章翻譯為 正體中文 (繁體) 版本。加入我們，幫忙翻譯！
This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
Summary
The transition CSS property is a shorthand property for transition-property, transition-duration, transition-timing-function, and transition-delay. It enables you to define the transition between two states of an element. Different states may be defined using pseudo-classes like :hover or :active or dynamically set using JavaScript.
| Initial value | as each of the properties of the shorthand: |
|---|---|
| Applies to | all elements, ::before and ::after pseudo-elements |
| Inherited | no |
| Media | interactive |
| Computed value | as each of the properties of the shorthand:
|
| Animatable | no |
| Canonical order | order of appearance in the formal grammar of the values |
Syntax
/* Apply to 1 property */ /* property name | duration */ transition: margin-left 4s; /* property name | duration | delay */ transition: margin-left 4s 1s; /* property name | duration | timing function | delay */ transition: margin-left 4s ease-in-out 1s; /* Apply to 2 properties */ transition: margin-left 4s, color 1s; /* Apply to all changed properties */ transition: all 0.5s ease-out; /* Global values */ transition: inherit; transition: initial; transition: unset;
Note that order is important within the items in this property: the first value that can be parsed as a time is assigned to the transition-duration, and the second value that can be parsed as a time is assigned to transition-delay.
See how things are handled when lists of property values aren't the same length. In short, extra transition descriptions beyond the number of properties actually being animated are ignored.
Formal syntax
<single-transition>#where
<single-transition> = [ none | <single-transition-property> ] || <time> || <single-transition-timing-function> || <time>where
<single-transition-property> = all | IDENT
<single-transition-timing-function> = ease | linear | ease-in | ease-out | ease-in-out | step-start | step-end | steps(<integer>[, [ start | end ] ]?) | cubic-bezier(<number>, <number>, <number>, <number>)
Examples
There are several more examples of CSS transitions included in the main CSS transitions article.
Specifications
| Specification | Status | Comment |
|---|---|---|
| CSS Transitions The definition of 'transition' in that specification. |
Working Draft | Initial definition |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | 1.0 -webkit 26.0 # |
4.0 (2.0) -moz 16.0 (16.0)[1] |
10.0 | 10.1 -o 12.10 # |
3.0 -webkit 6.1 |
| Gradients[2] | No support | No support | 10.0 | No support | No support |
| Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | 2.1 -webkit | 4.0 (2.0) -moz 16.0 (16.0)[1] |
10.0 | 10.0 -o 12.10 # |
3.2 -webkit |
| Gradients[1] | No support | No support | 10.0 | No support | No support |
[1] In addition to the unprefixed support, Gecko 44.0 (Firefox 44.0 / Thunderbird 44.0 / SeaMonkey 2.41) added support for a -webkit prefixed version of the property for web compatibility reasons behind the preference layout.css.prefixes.webkit, defaulting to false. Since Gecko 49.0 (Firefox 49.0 / Thunderbird 49.0 / SeaMonkey 2.46) the preference defaults to true.
[2] PPK test