以下为部分HTML代码

<canvas id="canvas"></canvas>

以下为部分CSS代码

@keyframes wobble {
  to {
    transform: translate3d(-50%, -50%, 0) scale(0.5);
  }
}
@keyframes wobble2 {
  to {
    transform: scale(0.5);
  }
}

以下为部分js代码

const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
const colours = ["#F73859", "#14FFEC", "#00E0FF", "#FF99FE", "#FAF15D"];


let balls = [];
let pressed = false;
let longPressed = false;
let longPress;
let multiplier = 0;
let width, height;
let origin;
let normal;