<div id="app">
</div>
body {
width: 100vw;
height: 100vh;
overflow: hidden;
padding: 0;
margin: 0;
display: flex;
justify-content: center;
align-items: center;
background: linear-gradient(180deg, #70f, #40f);
font-family:system-ui;
}
import React,{useState, StrictMode,useEffect} from 'https://esm.sh/react@18.2.0'
import ReactDOM from 'https://esm.sh/react-dom@18.2.0'
import {motion,useMotionValue,useTransform} from "https://esm.sh/framer-motion@8.3.3";
const App = function() {
const radiusMV = useMotionValue(0)
const radius = useTransform(radiusMV,[-200,200],[10,40])
return (
<div
style={{
display:'flex',
flexDirection:'column',
justifyContent:'center',
alignItems:'center',
}}
>
<motion.div
style={{
width:100,
height:100,
backgroundColor:'white',
borderRadius:radius
}}
>
</motion.div>
<motion.div
style={{
x:radiusMV,
height:20,
width:6,
borderRadius:2,
backgroundColor:'white',
y:20
}}
drag="x"
dragMomentum={false}
>
</motion.div>
<motion.span
style={{
y:30,
letterSpacing:2,
color:'white',
opacity:0.3
}}
>
左右拖动我
</motion.span>
</div>
)
}
const container = document.querySelector("#app")
console.log(container)
const root = ReactDOM.createRoot(container)
root.render(
<StrictMode>
<App />
</StrictMode>
)
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This Pen doesn't use any external JavaScript resources.