How to draw an SVG on Scroll in Next JS - reactjs

Question

Background
I've been reading everything, and watching everything and can't quite figure it out. I know the very basics of React JS from FCC and have went through a large chunk of Fireship.io course on Next JS. Any help is appreciated.
What I Am Attempting To Do
I have an SVG logo, and I am attempting to animate it when scrolling. I'm trying to follow this tutorial: https://www.w3schools.com/howto/howto_js_scrolldrawing.asp which is written for Vanilla JS, HTML/CSS. I've made a website with Vanilla JS and hypertext preprocessor, but am now attempting to learn front-end frameworks, and thus am implementing in React.
What Seems to Be The Problem
I am using functional components, and these documents are pretty confusing. Apparently, you can't use the ref keywords with functional components and would have to use classes, which I am trying to avoid.
Current Work
This is what I currently have:
// Packages to import:
import React from 'react';
export default function Home() {
// Initialization:
var homepage_logo_main_content = React.useRef(); /* So why we can use this but not . notation for font awesome icons? */
// Update value of SVG on scroll to present animation effect:
function animate_svg_on_scroll(value) {
var homepage_logo_main_content_total_length = homepage_logo_main_content.current.getTotalLength(); // Getting the total length of the SVG path.
homepage_logo_main_content.current.style.strokeDasharray = homepage_logo_main_content_total_length; // Get the starting position of the draw.
homepage_logo_main_content.current.style.strokeDashoffset = homepage_logo_main_content_total_length;
var draw = homepage_logo_main_content_total_length * value;
};
React.useEffect(() => {
const handleScroll = event => {
const value = window.scrollY / 1069;
animate_svg_on_scroll(value);
};
window.addEventListener('scroll', handleScroll);
return () => {
window.removeEventListener('scroll', handleScroll);
};
}, []);
return (
<div className = "homepage_main_div">
<svg xmlns = "http://www.w3.org/2000/svg" version="1.0" width="400.000000pt" height = "400.000000pt" viewBox = "0 0 400.000000 400.000000" preserveAspectRatio = "xMidYMid meet" className = "homepage_logo">
<g transform = "translate(0.000000,400.000000) scale(0.100000,-0.100000)" fill = "#000000" stroke = "none">
<path id = "tiger" ref = {homepage_logo_main_content} d = "M0 2000 l0 -2000 2000 0 2000 0 0 2000 0 2000 -2000 0 -2000 0 0 -2000z 2z"/>
<path d = "M820 2176 c-25 -7 -61 -21 -80 -31 -54 -28 -148 -124 -187 -189 -32 -55 -83 -176 -83 -197 0 -15 265 -10 348 7 190 38 282 121 282 251 0 69 -21 110 -75 143 -45 28 -140 35 -205 16z"/>
<path d = "M1800 1585 c0 -161 2 -186 16 -192 9 -3 20 0 25 8 5 8 8 93 6 189 -2 173 -2 175 -24 178 l-23 3 0 -186z"/>
</g>
</svg>
<h1> Welcome to this math website </h1>
</div>
)
}
Next JS doesn't seem to throw an error, and the website renders. When I scroll, the useEffect hook and the event listener does output the Y scroll position. However, nothing in the animate_svg_on_scroll seems to work.
If TL;DR, please see the link above from W3 schools and suggest how to implement in Next JS and what resources to watch/read. Thank you so very much (been working on this for a couple of days).

Answer 1

Your path is not display because of stroke="none" in g tag. Change it to another color then path will display
<svg
xmlns="http://www.w3.org/2000/svg"
version="1.0"
width="400.000000pt"
height="400.000000pt"
viewBox="0 0 400.000000 400.000000"
preserveAspectRatio="xMidYMid meet"
className="homepage_logo"
>
<g
transform="translate(0.000000,400.000000) scale(0.100000,-0.100000)"
fill="none"
stroke="red"
stroke-width="20"
>
<path
id="tiger"
d="M0 2000 l0 -2000 2000 0 2000 0 0 2000 0 2000 -2000 0 -2000 0 0 -2000z 2z"
ref={homepage_logo_main_content}
/>
<path d="M820 2176 c-25 -7 -61 -21 -80 -31 -54 -28 -148 -124 -187 -189 -32 -55 -83 -176 -83 -197 0 -15 265 -10 348 7 190 38 282 121 282 251 0 69 -21 110 -75 143 -45 28 -140 35 -205 16z" />
<path d="M1800 1585 c0 -161 2 -186 16 -192 9 -3 20 0 25 8 5 8 8 93 6 189 -2 173 -2 175 -24 178 l-23 3 0 -186z" />
</g>
</svg>
You can refer my codesandbox