Hero Highlight

A background effect with a text highlight component, perfect for hero sections.

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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/hero-highlight.tsx

"use client";
import { cn } from "@/lib/utils";
import { useMotionValue, motion, useMotionTemplate } from "motion/react";
import React from "react";
 
export const HeroHighlight = ({
  children,
  className,
  containerClassName,
}: {
  children: React.ReactNode;
  className?: string;
  containerClassName?: string;
}) => {
  let mouseX = useMotionValue(0);
  let mouseY = useMotionValue(0);
 
  // SVG patterns for different states and themes
  const dotPatterns = {
    light: {
      default: `url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32' width='16' height='16' fill='none'%3E%3Ccircle fill='%23d4d4d4' id='pattern-circle' cx='10' cy='10' r='2.5'%3E%3C/circle%3E%3C/svg%3E")`,
      hover: `url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32' width='16' height='16' fill='none'%3E%3Ccircle fill='%236366f1' id='pattern-circle' cx='10' cy='10' r='2.5'%3E%3C/circle%3E%3C/svg%3E")`,
    },
    dark: {
      default: `url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32' width='16' height='16' fill='none'%3E%3Ccircle fill='%23404040' id='pattern-circle' cx='10' cy='10' r='2.5'%3E%3C/circle%3E%3C/svg%3E")`,
      hover: `url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32' width='16' height='16' fill='none'%3E%3Ccircle fill='%238183f4' id='pattern-circle' cx='10' cy='10' r='2.5'%3E%3C/circle%3E%3C/svg%3E")`,
    },
  };
 
  function handleMouseMove({
    currentTarget,
    clientX,
    clientY,
  }: React.MouseEvent<HTMLDivElement>) {
    if (!currentTarget) return;
    let { left, top } = currentTarget.getBoundingClientRect();
 
    mouseX.set(clientX - left);
    mouseY.set(clientY - top);
  }
  return (
    <div
      className={cn(
        "group relative flex h-[40rem] w-full items-center justify-center bg-white dark:bg-black",
        containerClassName,
      )}
      onMouseMove={handleMouseMove}
    >
      <div
        className="pointer-events-none absolute inset-0 dark:hidden"
        style={{
          backgroundImage: dotPatterns.light.default,
        }}
      />
      <div
        className="pointer-events-none absolute inset-0 hidden dark:block"
        style={{
          backgroundImage: dotPatterns.dark.default,
        }}
      />
      <motion.div
        className="pointer-events-none absolute inset-0 opacity-0 transition duration-300 group-hover:opacity-100 dark:hidden"
        style={{
          backgroundImage: dotPatterns.light.hover,
          WebkitMaskImage: useMotionTemplate`
            radial-gradient(
              200px circle at ${mouseX}px ${mouseY}px,
              black 0%,
              transparent 100%
            )
          `,
          maskImage: useMotionTemplate`
            radial-gradient(
              200px circle at ${mouseX}px ${mouseY}px,
              black 0%,
              transparent 100%
            )
          `,
        }}
      />
      <motion.div
        className="pointer-events-none absolute inset-0 hidden opacity-0 transition duration-300 group-hover:opacity-100 dark:block"
        style={{
          backgroundImage: dotPatterns.dark.hover,
          WebkitMaskImage: useMotionTemplate`
            radial-gradient(
              200px circle at ${mouseX}px ${mouseY}px,
              black 0%,
              transparent 100%
            )
          `,
          maskImage: useMotionTemplate`
            radial-gradient(
              200px circle at ${mouseX}px ${mouseY}px,
              black 0%,
              transparent 100%
            )
          `,
        }}
      />
 
      <div className={cn("relative z-20", className)}>{children}</div>
    </div>
  );
};
 
export const Highlight = ({
  children,
  className,
}: {
  children: React.ReactNode;
  className?: string;
}) => {
  return (
    <motion.span
      initial={{
        backgroundSize: "0% 100%",
      }}
      animate={{
        backgroundSize: "100% 100%",
      }}
      transition={{
        duration: 2,
        ease: "linear",
        delay: 0.5,
      }}
      style={{
        backgroundRepeat: "no-repeat",
        backgroundPosition: "left center",
        display: "inline",
      }}
      className={cn(
        `relative inline-block rounded-lg bg-gradient-to-r from-indigo-300 to-purple-300 px-1 pb-1 dark:from-indigo-500 dark:to-purple-500`,
        className,
      )}
    >
      {children}
    </motion.span>
  );
};

Props

`HeroHighlight` Props

Prop	Type	Default	Description
children	`React.ReactNode`	N/A	The content to be displayed inside the HeroHighlight component.
className	`string (optional)`	N/A	Additional CSS classes to apply to the child component for styling.
containerClassName	`string (optional)`	N/A	Additional CSS classes to apply to the container component for styling.

`Highlight` Props

Prop	Type	Default	Description
children	`React.ReactNode`	N/A	The content to be highlighted.
className	`string (optional)`	N/A	Additional CSS classes to apply to the Highlight component for styling.

Inspiration for this component is taken from Designboost's Homepage

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