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sixian
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what does [\s\S] match in regex?

Answer

In regular expressions, [\s\S] is a character class that matches any character, including a newline character. It is a hack around the problem that the dot . doesn't match newlines by default
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The \s shorthand character class stands for "whitespace character" and matches a single whitespace character, such as a space, tab, carriage return, line feed, or form feed, depending on the regex flavor
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The \S shorthand character class, on the other hand, matches any non-whitespace character
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By combining the \s and \S shorthand character classes inside square brackets, [\s\S] matches any character, including whitespace and non-whitespace characters, and including newline characters
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For example, the following regular expression matches any string that starts with a letter, followed by any number of characters, including newlines, and ends with a digit:
regex
^[a-zA-Z][\s\S]*\d$
In this regular expression, ^[a-zA-Z] matches the start of the string followed by a letter, [\s\S]* matches any number of characters, including newlines, and \d$ matches a digit at the end of the string
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Framer motion variants doesn't work on position layout change

Answer

According to the search results, it seems that Framer Motion variants do not work on position layout change. However, Framer Motion provides other features to animate layout changes, such as the layout prop, AnimateSharedLayout, and layoutId. The layout prop enables Framer Motion's layout animations, which animate any layout change that happens as the result of a re-render
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The AnimateSharedLayout component animates layout changes across, and between, multiple components
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Finally, the layoutId prop tracks the layout of an element and animates it in place when its layout changes
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Therefore, if you want to animate layout changes in Framer Motion, you can use one of these features instead of variants.
why absolute positioned elements respect the flex layout

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When you absolutely position a flex item, it's no longer part of the flex layout, but if you make the child position: absolute; and don’t apply any top/right/bottom/left properties, then flexbox alignment will still apply to it. This is because when you apply position: absolute; to things (and nothing else), they kinda just stay where they are until you apply other positioning. The child element will respect the flex layout and will be positioned according to the flexbox alignment rules
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framer motion how to loop animation

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To loop an animation in Framer Motion, you can use the AnimatePresence component, the transition prop, or the repeat and repeatType props. The AnimatePresence component allows you to animate components that are entering or leaving the DOM. You can use the exit prop to define an animation that plays when a component is removed from the DOM, and the AnimatePresence component will automatically handle the animation. To loop an animation, you can use the key prop to force the component to re-mount, and then use the exit prop to define the animation that plays when the component is removed from the DOM. You can repeat this process as many times as you want to loop the animation
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The transition prop allows you to define the animation properties for a component. You can use the duration and repeat props to define the duration and number of times the animation should repeat. For example, to loop an animation three times, you can set the repeat prop to 2 (since the animation will play once by default), and set the repeatType prop to "loop"
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Finally, you can use the repeat and repeatType props directly on a variant to loop an animation. For example, you can set the repeat prop to Infinity and the repeatType prop to "loop" to loop an animation indefinitely
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Here is an example of how to loop an animation using the AnimatePresence component:
jsx
import { motion, AnimatePresence } from "framer-motion"; const MyComponent = () => { const [isVisible, setIsVisible] = useState(true); return ( <AnimatePresence> {isVisible && ( <motion.div key="my-component" initial={{ opacity: 0 }} animate={{ opacity: 1 }} exit={{ opacity: 0 }} transition={{ duration: 1 }} onAnimationComplete={() => setIsVisible(false)} > My Component </motion.div> )} </AnimatePresence> ); };
In this example, the MyComponent is wrapped in an AnimatePresence component, which will handle the animation when the component is removed from the DOM. The MyComponent is initially visible, and when it finishes animating, it sets isVisible to false, which removes the component from the DOM. The key prop is set to "my-component", which forces the component to re-mount when it is added back to the DOM, causing the animation to play again.
framer motion how to click to replay an animation

Answer

To click to replay an animation in Framer Motion, you can use the onClick event handler to trigger a state change that will re-render the component and replay the animation. For example, you can define a state variable that toggles between true and false when the component is clicked, and use this variable to conditionally render the component with the animation. When the component is clicked again, the state variable will toggle again, causing the component to re-render and replay the animation
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Here is an example of how to click to replay an animation using the useState hook and the onClick event handler:
jsx
import { motion } from "framer-motion"; import { useState } from "react"; const MyComponent = () => { const [isPlaying, setIsPlaying] = useState(false); const handleClick = () => { setIsPlaying(!isPlaying); }; return ( <motion.div animate={{ opacity: isPlaying ? 1 : 0 }} transition={{ duration: 1 }} onClick={handleClick} > Click me to replay the animation! </motion.div> ); };
In this example, the MyComponent is defined with an isPlaying state variable that toggles between true and false when the component is clicked. The handleClick function is defined to update the isPlaying state variable when the component is clicked. The motion.div component is animated with the animate prop, which sets the opacity to 1 when isPlaying is true, and 0 when isPlaying is false. The transition prop is used to define the duration of the animation. Finally, the onClick event handler is set to the handleClick function to trigger the state change when the component is clicked.

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