keyTimes

1. SVG 元素

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   15. U
       1. <use>
   16. V-Z
       1. <view>
       2. <vkern>

keyTimes attribute represents a list of time values used to control the pacing of the animation.

Each time in the list corresponds to a value in the values attribute list, and defines when the value is used in the animation. Each time value in the keyTimes list is specified as a floating point value between 0 and 1 (inclusive), representing a proportional offset into the duration of the animation element.

You can use this attribute with the following SVG elements:

• <animate>
• <animateColor>
• <animateMotion>
• <animateTransform>

范例

html, body, svg {
  height: 100%;
}

								

<svg viewBox="0 0 120 120" xmlns="http://www.w3.org/2000/svg">
  <circle cx="60" cy="10" r="10">
    <animate attributeName="cx" dur="4s" repeatCount="indefinite"
        values="60; 110; 60; 10; 60" keyTimes="0; 0.25; 0.5; 0.75; 1"/>
    <animate attributeName="cy" dur="4s" repeatCount="indefinite"
        values="10; 60; 110; 60; 10" keyTimes="0; 0.25; 0.5; 0.75; 1"/>
  </circle>
</svg>

								

用法注意事项

值对于 keyTimes attribute is a semicolon-separated list of values.

There must be exactly as many values in the keyTimes list as in the 值 列表。

Each successive time value must be greater than or equal to the preceding time value.

keyTimes list semantics depends upon the interpolation mode:

• For linear and spline animation, the first time value in the list must be 0, and the last time value in the list must be 1 . The key time associated with each value defines when the value is set; values are interpolated between the key times.
• For discrete animation, the first time value in the list must be 0 . The time associated with each value defines when the value is set; the animation function uses that value until the next time defined in the list.

若 calcMode attribute is set to paced ， keyTimes attribute is ignored.

If the duration of the animation is indefinite, any keyTimes specification will be ignored.

• Safari issue: keyTimes values should be separated with semicolumn without space before, f.e: keyTimes="0; 0.25; 0.5; 0.75; 1"

规范

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最后修改： Dec 29, 2021 , 由 MDN 贡献者