Using particles.js, you can implement animated backgrounds on your website.
To implement it easily, paste the following code inside the body tag of header.php.
The key is to write <div id=“particles-js”></div> before loading the script. Without this, it won’t work.
<div id="particles-js"></div>
<link rel="stylesheet" href="https://yuis.xsrv.jp/cdn/css/particles_js/main.css">
<script src="https://cdn.jsdelivr.net/npm/[email protected]/particles.min.js"></script>
<script src="https://yuis.xsrv.jp/cdn/js/particles_js/app.js"></script>By the way, app.js and main.css look like the following code.
main.css
#particles-js{
position: fixed;
width: 100%;
height: 100%;
z-index: -1;
}app.js
particlesJS("particles-js", {
"particles": {
"number": {
"value": 80,
"density": {
"enable": true,
"value_area": 800
}
},
"color": {
"value": "#000000"
},
"shape": {
"type": "circle",
"stroke": {
"width": 0,
"color": "#fff"
},
"polygon": {
"nb_sides": 5
},
"image": {
"src": "img/github.svg",
"width": 100,
"height": 100
}
},
"opacity": {
"value": 0.5,
"random": false,
"anim": {
"enable": false,
"speed": 1,
"opacity_min": 0.1,
"sync": false
}
},
"size": {
"value": 2,
"random": true,
"anim": {
"enable": false,
"speed": 40,
"size_min": 0.1,
"sync": false
}
},
"line_linked": {
"enable": true,
"distance": 150,
"color": "#000000",
"opacity": 0.4,
"width": 1
},
"move": {
"enable": true,
"speed": 2,
"direction": "none",
"random": false,
"straight": false,
"out_mode": "out",
"bounce": false,
"attract": {
"enable": false,
"rotateX": 600,
"rotateY": 1200
}
}
},
"interactivity": {
"detect_on": "canvas",
"events": {
"onhover": {
"enable": true,
"mode": "grab"
},
"onclick": {
"enable": true,
"mode": "push"
},
"resize": true
},
"modes": {
"grab": {
"distance": 150,
"line_linked": {
"opacity": 1
}
},
"bubble": {
"distance": 400,
"size": 40,
"duration": 2,
"opacity": 8,
"speed": 3
},
"repulse": {
"distance": 200,
"duration": 0.4
},
"push": {
"particles_nb": 4
},
"remove": {
"particles_nb": 2
}
}
},
"retina_detect": true
});
requestAnimationFrame();
About z-index
Since there’s no z-index, particles.js won’t respond even when you mouse over. That said, if you set z-index to positive, you won’t be able to click various links on the site. It’s unfortunate that you can’t enjoy the mouse-over action which is the biggest feature of particles.js, but I think it’s better to keep the z-index low to avoid bugs later.