1# ArkUI Subsystem Changelog
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3## cl.arkui.1 Change in Handling of Invalid animationDuration Values for the \<Tabs> Component
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5**Access Level**
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7Other
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9**Reason for Change**
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11When the **animationDuration** attribute is set to **null**, the default value should be used.
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13**Change Impact**
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15This change is a non-compatible change.
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17In API version 10 and earlier versions, when the **animationDuration** attribute is set to **null**, no tab switching animation is played.
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19Since API version 11, if the **animationDuration** attribute is set to **null**, the default value is used. In this case, when the tab bar is set to **BottomTabBarStyle**,no tab switching animation is played; when the tab bar is any other style, a 300 ms tab switching animation is played.
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21**API Level**
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2311
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25**Change Since**
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27OpenHarmony SDK 4.1.6.3
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29**Key API/Component Changes**
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31\<Tabs>
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33**Adaptation Guide**
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35Since API version 11, if you want to disable the tab switching animation, you must set **animationDuration** to **0**, rather than **null**.
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