本文实例为大家分享了js实现跟随彩色气泡的具体代码，供大家参考，具体内容如下
代码：
<!DOCTYPE html><html><head><meta charset="utf-8" /><title></title><style> *{ margin:0;padding:0; } body{overflow:hidden;} #canvas{ background-color:black; } </style></head><body><canvas id="canvas" ></canvas> </body><script>var canvas = document.querySelector('#canvas');var ctx = canvas.getContext("2d");var starlist = [];function init(){ canvas.width = window.innerWidth; canvas.height = window.innerHeight;}init();window.onresize = init;canvas.addEventListener('mousemove',function(e){ starlist.push(new Star(e.offsetX,e.offsetY)); console.log(starlist)})function random(min,max){ return Math.floor((max-min)*Math.random()+ min);}function Star(x,y){ this.x = x; this.y = y; this.vx = (Math.random()-0.5)*3; this.vy = (Math.random()-0.5)*3; this.color = 'rgb('+random(0,256)+','+random(0,256)+','+random(0,256)+')'; this.a = 1; console.log(this.color); this.draw();}Star.prototype={ draw:function(){ ctx.beginPath(); ctx.fillStyle = this.color; ctx.globalCompositeOperation='lighter' ctx.globalAlpha= this.a; ctx.arc(this.x,this.y,30,0,Math.PI*2,false); ctx.fill(); this.updata(); }, updata(){ this.x+=this.vx; this.y+=this.vy; this.a*=0.98; }}console.log(new Star(150,200));function render(){ ctx.clearRect(0,0,canvas.width,canvas.height) starlist.forEach((item,i)=>{ item.draw(); if(item.a<0.05){ starlist.splice(i,1); } }) requestAnimationFrame(render);}render(); </script><div style="text-align:center;"></div></html>以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
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