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Text Hover Effect

A text hover effect that animates and outlines gradient on hover, as seen on x.ai

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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/text-hover-effect.tsx

"use client";
import React, { useRef, useEffect, useState } from "react";
import { motion } from "motion/react";
 
export const TextHoverEffect = ({
  text,
  duration,
}: {
  text: string;
  duration?: number;
  automatic?: boolean;
}) => {
  const svgRef = useRef<SVGSVGElement>(null);
  const [cursor, setCursor] = useState({ x: 0, y: 0 });
  const [hovered, setHovered] = useState(false);
  const [maskPosition, setMaskPosition] = useState({ cx: "50%", cy: "50%" });
 
  useEffect(() => {
    if (svgRef.current && cursor.x !== null && cursor.y !== null) {
      const svgRect = svgRef.current.getBoundingClientRect();
      const cxPercentage = ((cursor.x - svgRect.left) / svgRect.width) * 100;
      const cyPercentage = ((cursor.y - svgRect.top) / svgRect.height) * 100;
      setMaskPosition({
        cx: `${cxPercentage}%`,
        cy: `${cyPercentage}%`,
      });
    }
  }, [cursor]);
 
  return (
    <svg
      ref={svgRef}
      width="100%"
      height="100%"
      viewBox="0 0 300 100"
      xmlns="http://www.w3.org/2000/svg"
      onMouseEnter={() => setHovered(true)}
      onMouseLeave={() => setHovered(false)}
      onMouseMove={(e) => setCursor({ x: e.clientX, y: e.clientY })}
      className="select-none"
    >
      <defs>
        <linearGradient
          id="textGradient"
          gradientUnits="userSpaceOnUse"
          cx="50%"
          cy="50%"
          r="25%"
        >
          {hovered && (
            <>
              <stop offset="0%" stopColor="#eab308" />
              <stop offset="25%" stopColor="#ef4444" />
              <stop offset="50%" stopColor="#3b82f6" />
              <stop offset="75%" stopColor="#06b6d4" />
              <stop offset="100%" stopColor="#8b5cf6" />
            </>
          )}
        </linearGradient>
 
        <motion.radialGradient
          id="revealMask"
          gradientUnits="userSpaceOnUse"
          r="20%"
          initial={{ cx: "50%", cy: "50%" }}
          animate={maskPosition}
          transition={{ duration: duration ?? 0, ease: "easeOut" }}
 
          // example for a smoother animation below
 
          //   transition={{
          //     type: "spring",
          //     stiffness: 300,
          //     damping: 50,
          //   }}
        >
          <stop offset="0%" stopColor="white" />
          <stop offset="100%" stopColor="black" />
        </motion.radialGradient>
        <mask id="textMask">
          <rect
            x="0"
            y="0"
            width="100%"
            height="100%"
            fill="url(#revealMask)"
          />
        </mask>
      </defs>
      <text
        x="50%"
        y="50%"
        textAnchor="middle"
        dominantBaseline="middle"
        strokeWidth="0.3"
        className="fill-transparent stroke-neutral-200 font-[helvetica] text-7xl font-bold dark:stroke-neutral-800"
        style={{ opacity: hovered ? 0.7 : 0 }}
      >
        {text}
      </text>
      <motion.text
        x="50%"
        y="50%"
        textAnchor="middle"
        dominantBaseline="middle"
        strokeWidth="0.3"
        className="fill-transparent stroke-neutral-200 font-[helvetica] text-7xl font-bold dark:stroke-neutral-800"
        initial={{ strokeDashoffset: 1000, strokeDasharray: 1000 }}
        animate={{
          strokeDashoffset: 0,
          strokeDasharray: 1000,
        }}
        transition={{
          duration: 4,
          ease: "easeInOut",
        }}
      >
        {text}
      </motion.text>
      <text
        x="50%"
        y="50%"
        textAnchor="middle"
        dominantBaseline="middle"
        stroke="url(#textGradient)"
        strokeWidth="0.3"
        mask="url(#textMask)"
        className="fill-transparent font-[helvetica] text-7xl font-bold"
      >
        {text}
      </text>
    </svg>
  );
};

Props

PropTypeDefaultDescription
textstringRequiredThe text to be displayed with the hover effect
durationnumber0The duration of the mask transition animation in seconds

The initial code of this component is contributed by Sudhanshu Mishra

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