过渡 | transition

transition CSS属性是transition-property，transition-duration，transition-timing-function和transition-delay的一个速记属性。

/* Apply to 1 property */
/* property name | duration */
transition: margin-right 4s;

/* property name | duration | delay */
transition: margin-right 4s 1s;

/* property name | duration | timing function */
transition: margin-right 4s ease-in-out;

/* property name | duration | timing function | delay */
transition: margin-right 4s ease-in-out 1s;

/* Apply to 2 properties */
transition: margin-right 4s, color 1s;

/* Apply to all changed properties */
transition: all 0.5s ease-out;

/* Global values */
transition: inherit;
transition: initial;
transition: unset;

转换，使您能够定义元素的两种状态之间的转换。不同的状态可以使用类似的类来定义:hover，:active或者使用JavaScript动态设置。

• transition-delay: 0s
• transition-duration: 0s
• transition-property: all
• transition-timing-function: ease

Applies to all elements, [`::before`](::before) and [`::after`](::after) [pseudo-elements](pseudo-elements)    [Inherited](inheritance) no   Media interactive   [Computed value](computed_value) as each of the properties of the shorthand:

• transition-delay: as specified
• transition-duration: as specified
• transition-property: as specified
• transition-timing-function: as specified

Animation type discrete   Canonical order order of appearance in the formal grammar of the values  

语法

transition属性被指定为一个或多个单独属性转换，用逗号分隔。

每个单属性过渡描述应被应用到单个属性（或特殊值all和none）。这包括：

• 零个或一个值代表过渡应适用的财产。这可能是以下任何一种：
  • 关键字 none
  • 关键字 all
  • 一个<custom-ident>命名的CSS属性。
• <single-transition-timing-function>表示要使用的计时功能的零个或一个值
• 零个，一个或两个<time>值。第一个可以作为时间分析的值被分配给transition-duration，第二个值可以在分配transition-delay时间时被分析transition-delay。

当属性值列表长度不相同时，看看事情是如何处理的。简而言之，超出实际动画属性数量的额外转换描述将被忽略。

形式语法

<single-transition>#where <single-transition> = [ none | <single-transition-property> ] || <time> || <single-transition-timing-function> || <time>where <single-transition-property> = all | <custom-ident><single-transition-timing-function> = <single-timing-function>where <single-timing-function> = linear | <cubic-bezier-timing-function> | <step-timing-function> | <frames-timing-function>where <cubic-bezier-timing-function> = ease | ease-in | ease-out | ease-in-out | cubic-bezier(<number>, <number>, <number>, <number>)<step-timing-function> = step-start | step-end | steps(<integer>[, [ start | end ] ]?)<frames-timing-function> = frames(<integer>)

示例

主CSS过渡文章中还包含了更多CSS过渡示例。

规范

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