Moving Border

A border that moves around the container. Perfect for making your buttons stand out.

Installation

Install dependencies

npm i motion clsx tailwind-merge

Add util file

lib/utils.ts

import { ClassValue, clsx } from "clsx";
import { twMerge } from "tailwind-merge";
 
export function cn(...inputs: ClassValue[]) {
  return twMerge(clsx(inputs));
}

Copy the source code

components/ui/moving-border.tsx

"use client";
import React from "react";
import {
  motion,
  useAnimationFrame,
  useMotionTemplate,
  useMotionValue,
  useTransform,
} from "motion/react";
import { useRef } from "react";
import { cn } from "@/lib/utils";
 
export function Button({
  borderRadius = "1.75rem",
  children,
  as: Component = "button",
  containerClassName,
  borderClassName,
  duration,
  className,
  ...otherProps
}: {
  borderRadius?: string;
  children: React.ReactNode;
  as?: any;
  containerClassName?: string;
  borderClassName?: string;
  duration?: number;
  className?: string;
  [key: string]: any;
}) {
  return (
    <Component
      className={cn(
        "relative h-16 w-40 overflow-hidden bg-transparent p-[1px] text-xl",
        containerClassName,
      )}
      style={{
        borderRadius: borderRadius,
      }}
      {...otherProps}
    >
      <div
        className="absolute inset-0"
        style={{ borderRadius: `calc(${borderRadius} * 0.96)` }}
      >
        <MovingBorder duration={duration} rx="30%" ry="30%">
          <div
            className={cn(
              "h-20 w-20 bg-[radial-gradient(#0ea5e9_40%,transparent_60%)] opacity-[0.8]",
              borderClassName,
            )}
          />
        </MovingBorder>
      </div>
 
      <div
        className={cn(
          "relative flex h-full w-full items-center justify-center border border-slate-800 bg-slate-900/[0.8] text-sm text-white antialiased backdrop-blur-xl",
          className,
        )}
        style={{
          borderRadius: `calc(${borderRadius} * 0.96)`,
        }}
      >
        {children}
      </div>
    </Component>
  );
}
 
export const MovingBorder = ({
  children,
  duration = 3000,
  rx,
  ry,
  ...otherProps
}: {
  children: React.ReactNode;
  duration?: number;
  rx?: string;
  ry?: string;
  [key: string]: any;
}) => {
  const pathRef = useRef<any>();
  const progress = useMotionValue<number>(0);
 
  useAnimationFrame((time) => {
    const length = pathRef.current?.getTotalLength();
    if (length) {
      const pxPerMillisecond = length / duration;
      progress.set((time * pxPerMillisecond) % length);
    }
  });
 
  const x = useTransform(
    progress,
    (val) => pathRef.current?.getPointAtLength(val).x,
  );
  const y = useTransform(
    progress,
    (val) => pathRef.current?.getPointAtLength(val).y,
  );
 
  const transform = useMotionTemplate`translateX(${x}px) translateY(${y}px) translateX(-50%) translateY(-50%)`;
 
  return (
    <>
      <svg
        xmlns="http://www.w3.org/2000/svg"
        preserveAspectRatio="none"
        className="absolute h-full w-full"
        width="100%"
        height="100%"
        {...otherProps}
      >
        <rect
          fill="none"
          width="100%"
          height="100%"
          rx={rx}
          ry={ry}
          ref={pathRef}
        />
      </svg>
      <motion.div
        style={{
          position: "absolute",
          top: 0,
          left: 0,
          display: "inline-block",
          transform,
        }}
      >
        {children}
      </motion.div>
    </>
  );
};

Props

Prop	Type	Description
`borderRadius`	string	Optional. Defines the border radius of the button. Default value is "1.75rem".
`children`	React.ReactNode	Required. The content to be displayed inside the button.
`as`	any	Optional. Defines the HTML element or React component that will be used for the button. Default is "button".
`containerClassName`	string	Optional. Additional CSS classes to be applied to the button container.
`borderClassName`	string	Optional. Additional CSS classes to be applied to the button border.
`duration`	number	Optional. Duration for the moving border animation in milliseconds. Default is 2000.
`className`	string	Optional. Additional CSS classes to be applied to the button.
`[key: string]`	any	Optional. Any other props that should be passed to the button.

Build websites faster and 10x better than your competitors with Aceternity UI Pro

With the best in class components and templates, stand out from the crowd and get more attention to your website. Trusted by founders and entrepreneurs from all over the world.

Go Pro

Manu is a genius. He is open-minded, curious and deeply invested in the projects he chooses to work on. He takes your vision and brings it to life -- and is a true partner in th...

Meru Gokhale

Founder at Editorially, Editrix