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The transition-timing-function attribute is used to specify the speed curve of the transition effect, which allows the transition effect to change its speed over time; it can achieve transition effects that start slowly, then become faster, then end slowly, etc. .
CSS3 transition-timing-function attribute
Function:transition- The timing-function attribute specifies the velocity curve of the transition effect. This property allows the transition effect to change its speed over time.
Syntax:
transition-timing-function: linear|ease|ease-in|ease-out|ease-in-out|cubic-bezier(n,n,n,n);
Description:
linear: Specifies a transition effect that starts and ends at the same speed (equal to cubic -bezier(0,0,1,1)).
ease: Specifies the transition effect that starts slowly, then becomes faster, and then ends slowly (cubic-bezier(0.25,0.1,0.25,1)).
ease-in: Specifies the transition effect that starts at a slow speed (equal to cubic-bezier(0.42,0,1,1)).
ease-out: Specifies the transition effect that ends at a slow speed (equal to cubic-bezier(0,0,0.58,1)).
ease-in-out: Specifies a transition effect that starts and ends at a slow speed (equal to cubic-bezier(0.42,0,0.58,1)).
cubic-bezier(n,n,n,n): Define your own value in the cubic-bezier function. Possible values are between 0 and 1.
Note: Internet Explorer 9 and earlier browsers do not support the transition-timing-function attribute; Internet Explorer 10, Firefox, Opera and Chrome support the transition-timing-function attribute. Safari supports an alternative -webkit-transition-timing-function attribute.
CSS3 transition-timing-function attribute usage example
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <style> div { width:100px; height:100px; background:red; margin: 10px 0px; } .demo1{ transition:width 2s; transition-timing-function:linear; /* Firefox 4 */ -moz-transition:width 2s; -moz-transition-timing-function:linear; /* Safari and Chrome */ -webkit-transition:width 2s; -webkit-transition-timing-function:linear; /* Opera */ -o-transition:width 2s; -o-transition-timing-function:linear; } .demo2{ transition:width 2s; transition-timing-function:ease; /* Firefox 4 */ -moz-transition:width 2s; -moz-transition-timing-function:ease; /* Safari and Chrome */ -webkit-transition:width 2s; -webkit-transition-timing-function:ease; /* Opera */ -o-transition:width 2s; -o-transition-timing-function:ease; } .demo1:hover,.demo2:hover { width:300px; } </style> </head> <body> <p>请把鼠标指针移动到红色的 div 元素上,查看过渡效果。</p> <p>匀速过渡</p> <div class="demo1"></div> <p>慢速开始,然后变快,然后慢速结束</p> <div class="demo2"></div> <p><b>注:</b>本例在 Internet Explorer 中无效。</p> </body> </html>
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