原生js实现万圣节快乐动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：动画

代码描述：原生js实现万圣节快乐动画效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >

<head>

  <meta charset="UTF-8">

  
  
  
<style>
* {
  margin: 0;
  padding: 0;
}

html,
body {
  overflow: hidden;
}

body {
  position: relative;
  background: #1a2a6c;
  background: -webkit-linear-gradient(to top, #fdbb2d, #b21f1f, #1a2a6c);
  background: linear-gradient(to top, #fdbb2d, #b21f1f, #1a2a6c);
}
</style>



</head>

<body translate="no" >
  

  
      <script >
/*
* File Name / halloween.js
* Created Date / Oct 13, 2020
* Aurhor / Toshiya Marukubo
* Twitter / https://twitter.com/toshiyamarukubo
*/

/*
     Common Tool.
   */

class Tool {
  // random number.
  static randomNumber(min, max) {
    return Math.floor(Math.random() * (max - min + 1) + min);
  }
  // random color rgb.
  static randomColorRGB() {
    return (
      "rgb(" +
      this.randomNumber(0, 255) +
      ", " +
      this.randomNumber(0, 255) +
      ", " +
      this.randomNumber(0, 255) +
      ")");

  }
  // random color hsl.
  static randomColorHSL(saturation, lightness) {
    return (
      "hsl(" +
      this.randomNumber(0, 360) +
      ", " +
      saturation +
      "%, " +
      lightness +
      "%)");

  }
  // gradient color.
  static gradientColor(ctx, cr, cg, cb, ca, x, y, r) {
    const col = cr + "," + cg + "," + cb;
    const g = ctx.createRadialGradient(x, y, 0, x, y, r);
    g.addColorStop(0, "rgba(" + col + ", " + ca * 1 + ")");
    g.addColorStop(0.5, "rgba(" + col + ", " + ca * 0.5 + ")");
    g.addColorStop(1, "rgba(" + col + ", " + ca * 0 + ")");
    return g;
  }}


/*
       When want to use angle.
     */

class Angle {
  constructor(angle) {
    this.a = angle;
    this.rad = this.a * Math.PI / 180;
  }

  incDec(num) {
    this.a += num;
    this.rad = this.a * Math.PI / 180;
    return this.rad;
  }}


/*
       When want to use controller.
     */

class Controller {
  constructor(id) {
    this.id = document.getElementById(id);
  }
  getVal() {
    return this.id.value;
  }}


/*
       When want to use time.
     */

class Time {
  constructor(time) {
    this.startTime = time;
    this.lastTime;
    this.elapsedTime;
  }

  getElapsedTime() {
    this.lastTime = Date.now();
    this.elapsedTime = (this.startTime - this.lastTime) * -1;
    return this.elapsedTime;
  }}


let canvas;

class Canvas {
  constructor(bool) {
    // create canvas.
    this.canvas = document.createElement("canvas");
    // if on screen.
    if (bool === true) {
      this.canvas.style.display = 'block';
      this.canvas.style.top = 0;
      this.canvas.style.left = 0;
      document.getElementsByTagName("body")[0].appendChild(this.canvas);
    }
    this.ctx = this.canvas.getContext("2d");
    this.width = this.canvas.width = window.innerWidth;
    this.height = this.canvas.height = window.innerHeight;
    this.standard = this.width > this.height ? this.width : this.height * 1.5;
    // mouse infomation.
    this.mouseX = this.width / 2;
    this.mouseY = this.height / 10;
    this.mouseZ = null;
    // ground
    this.ground;
    this.groundHeight = 100;
    // grave
    this.graves = [];
    this.graveSize = this.standard / 50;
    this.graveDist = 10;
    this.graveTime = null;
    this.graveBehavior = 1;
    // pumpkin
    this.pumpkin;
    this.pumpkinSize = this.standard / 9;
    this.pumpkinTime = null;
    this.pumpkinBehavior = 1;
    // text
    this.text;
    this.sentence = this.width > this.height ? 'HAPPY HALLOWEEN' : 'HALLOWEEN';
    this.textSize = this.standard / 4;
    this.fontSize = this.standard / 25;
    this.textTime = null;
    this.textBehavior = null;
    // house
    this.houses = [];
    this.houseSize = this.standard / 10;
    this.houseNum = 3;
    this.houseTime = null;
    this.houseBehavior = null;
    // spider
    this.spiders = [];
    this.spiderSize = this.standard / 80;
    this.spiderNum = 3;
    this.spiderTime = null;
    this.spiderBehavior = null;
    // shooting star
    this.pointX = this.width + 100;
    this.pointY = Tool.randomNumber(0, this.height / 10);
    this.starNum = 300;
    this.stars = [];
    this.starBehavior = null;
   .........完整代码请登录后点击上方下载按钮下载查看