js+css3制作按键弹出钢琴键特效

敲击对应的键盘按钮看效果window.onload = function(){ var aP = document.getElementsByTagName("p"); var aSpan = document.getElementsByTagName("span"); var aKeyCode = [65,83,68,74,75,76]; document.onkeydown = function(event){ var event = event || window.event; for(var i=0; i0?Math.ceil(speed):Math.floor(speed); if(sAttribute=='opacity'){ obj.style.filter='alpha(opacity:'+(cur+speed)+')'; //IE obj.style.opacity=(cur+speed)/100; //ff chrome }else{ obj.style[sAttribute]=cur+speed+'px'; } if(cur!=iTarget){ bSwitch=false; } } if(bSwitch){ clearInterval(obj.timer); if(fnEnd){ fnEnd(); } } }, 30); } //获取飞行间样式 function getStyle(obj,sAuttribute){ var result = "" if(window.getComputedStyle){ result = window.getComputedStyle(obj,false)[sAuttribute]; }else{ resule = obj.currentStyle[sAuttribute]; } return result; }

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