Javascript在光标位置绘制粒子将粒子发送到底部

Question

我正在尝试使用从 https://github.com/tholman/90s-cursor-effects 下载的javascript

它会在光标的位置上创建气泡粒子效果，但是当我在标签中添加一些 or 元素时，所有粒子都会被推到网页底部。

这是JavaScript的示例代码，我对Web开发真的很陌生。当标签为空时，光标实际上在其实际位置显示粒子，但是当我包含一部分时，粒子被一直推到底部，然后当您向下滚动到底部时，粒子效果的距离会减小，但永远不会停留在实际光标位置。

这是我的代码。

(function bubblesCursor() {
var width = window.innerWidth;
var height = window.innerHeight;
var cursor = {
x: width / 2,
y: width / 2
};
var particles = [];
function init() {
bindEvents();
loop();
}
// Bind events that are needed
function bindEvents() {
document.addEventListener('mousemove', onMouseMove);
window.addEventListener('resize', onWindowResize);
}
function onWindowResize(e) {
width = window.innerWidth;
height = window.innerHeight;
}
function onTouchMove(e) {
if (e.touches.length > 0) {
for (var i = 0; i < e.touches.length; i++) {
addParticle(e.touches[i].clientX, e.touches[i].clientY);
}
}
}
function onMouseMove(e) {
cursor.x = e.clientX;
cursor.y = e.clientY;
addParticle(cursor.x, cursor.y);
}
function addParticle(x, y) {
var particle = new Particle();
particle.init(x, y);
particles.push(particle);
}
function updateParticles() {
// Update
for (var i = 0; i < particles.length; i++) {
particles[i].update();
}
// Remove dead particles
for (var i = particles.length - 1; i >= 0; i--) {
if (particles[i].lifeSpan < 0) {
particles[i].die();
particles.splice(i, 1);
}
}
}
function loop() {
requestAnimationFrame(loop);
updateParticles();
}
/**
* Particles
*/
function Particle() {
this.lifeSpan = 250; //ms
this.initialStyles = {
"position": "absolute",
"display": "block",
"pointerEvents": "none",
"z-index": "10000000",
"width": "5px",
"height": "5px",
"will-change": "transform",
"background": "#e6f1f7",
"box-shadow": "-1px 0px #6badd3, 0px -1px #6badd3, 1px 0px #3a92c5, 0px 1px #3a92c5",
"border-radius": "3px",
"overflow": "hidden"
};
// Init, and set properties
this.init = function(x, y) {
this.velocity = {
x: (Math.random() < 0.5 ? -1 : 1) * (Math.random() / 10),
y: (-.4 + (Math.random() * -1))
};
this.position = {
x: x - 10,
y: y - 10
};
this.element = document.createElement('span');
applyProperties(this.element, this.initialStyles);
this.update();
document.body.appendChild(this.element);
};
this.update = function() {
this.position.x += this.velocity.x;
this.position.y += this.velocity.y;
// Update velocities
this.velocity.x += (Math.random() < 0.5 ? -1 : 1) * 2 / 75;
this.velocity.y -= Math.random() / 600;
this.lifeSpan--;
this.element.style.transform = "translate3d(" + this.position.x + "px," + this.position.y + "px,0) scale(" + (0.2 + (250 - this.lifeSpan) / 250) + ")";
}
this.die = function() {
this.element.parentNode.removeChild(this.element);
}
}
/**
* Utils
*/
// Applies css `properties` to an element.
function applyProperties(target, properties) {
for (var key in properties) {
target.style[key] = properties[key];
}
}
init();
})();

Answer 1

问题不在于脚本，而在于布局HTML元素的方式。确保将最顶层的容器position设置为absolute：

<div class="parent" style="position: absolute;">
<h1>title</h1>
...
other content
...
</div>