【www.bbyears.com--js教程】
本文实例为大家分享了js飘落星星特效的具体代码,供大家参考,具体内容如下
1.效果图
2.代码
Title <script> function Star() { this.speed=10; this.img=new Image(); this.img.src="img/star"+parseInt(Math.random()*4+1)+".png"; this.img.style.width=50+"px"; this.img.style.height=50+"px"; this.img.style.top=Math.random()*window.innerHeight+1+"px"; this.img.style.left=Math.random()*window.innerWidth+1+"px"; document.body.appendChild(this.img); } Star.prototype.slip=function () { var that=this; function move() { that.img.style.top=that.img.offsetTop+that.speed+"px"; console.log(that.img.offsetTop+"star"); console.log(window.innerHeight+"window"); if(that.img.offsetTop>window.innerHeight){ clearInterval(sh); that.img.style.height=0; that.img.style.width=0; } } var sh=setInterval(move,100); } setInterval(function () { for(var i=1;i<5;i++){ new Star().slip(); } },1000) </script>