Transitions in CSS
在 CSS 中可define how an HTML element transitions between states
#transition-delay
Defines how long the transition has to wait before starting.
默认属性
transition-delay: 0s;
The transition will wait zero seconds, and thus start right away.
transition-delay: 1.2s;
You can use decimal values in seconds with the keyword s
.
transition-delay: 2400ms;
You can use milliseconds instead of seconds, with the keyword ms
.
transition-delay: -500ms;
You can use negative values: the transition will start as if it had already been playing for 500ms
.
#transition-duration
Defines how long the transition lasts.
默认属性
transition-duration: 0s;
The transition will last zero seconds, and is thus instant.
transition-duration: 1.2s;
You can use decimal values in seconds with the keyword s
.
transition-duration: 2400ms;
You can use milliseconds instead of seconds, with the keyword ms
.
#transition-property
Defines which properties will transition.
默认属性
transition-property: all;
The element will transition all properties:
transition-property: none;
The element will transition no property: the transition is thus instant.
transition-property: background;
The element will only transtion the background property.
transition-property: color;
The element will only transtion the color property.
transition-property: transform;
The element will only transtion the transform property.
#transition-timing-function
Defines how the values between the start and the end of the transition are calculated.
默认属性
transition-timing-function: ease;
The transition starts slowly, accelerates in the middle, and slows down at the end.
transition-timing-function: ease-in;
The transition starts slowly, and accelerates gradually until the end.
transition-timing-function: ease-out;
The transition starts quickly, and decelerates gradually until the end.
transition-timing-function: ease-in-out;
Like ease
, but more pronounced.
The transition starts quickly, and decelerates gradually until the end.
transition-timing-function: linear;
The transition has a *constant speed.
transition-timing-function: step-start;
The transition jumps instantly to the final state.
transition-timing-function: step-end;
The transition stays at the initial state until the end, when it instantly jumps to the final state.
transition-timing-function: steps(4, end);
By using steps()
with an integer, you can define a specific number of steps before reaching the end. The state of the element will not vary gradually, but rather jump from state to state in separate instants.
#transition
Shorthand property for transition-property
transition-duration
transition-timing-function
and transition-delay
.
Only transition-duration
is required.
transition: 1s;
transition-duration
is set to1s
transition-property
defaults toall
transition-timing-function
defaults toease
transition-delay
defaults to0s
transition: 1s linear;
transition-duration
is set to1s
transition-property
defaults toall
transition-timing-function
is set tolinear
transition-delay
defaults to0s
transition: background 1s linear;
transition-duration
is set to1s
transition-property
is set tobackground
transition-timing-function
is set tolinear
transition-delay
defaults to0s
transition: background 1s linear 500ms;
transition-duration
is set to1s
transition-property
is set tobackground
transition-timing-function
is set tolinear
transition-delay
is set to500ms
transition: background 4s, transform 1s;
You can combine multiple properties with their own transition duration.