JavaScript寫的炫光波動效果,看到一些Flash效果不錯,用JS也模擬一下,還有很多不完善的地方,給各位參考參考。
看到flash的實現這類的動畫非常的便捷，於是試圖胡搞一下。全部是用dom模擬的像素點，鋸齒是難免的……
這個要避免鋸齒恐怕要再加一次濾鏡了吧，或者用圖片。
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>炫光波動效果</title> <script> var lightWave = function(T,left,thick,sharp,speed,vibration,amplitude,opacity){ this.cont = T;//炫光容器 this.left = left;//炫光向右偏移量 this.thick = thick;//粗細 this.sharp = sharp;//尖銳度 this.speed = speed;//波動速度 this.vibration = vibration;//單位時間內的振動頻率 this.amplitude = amplitude;//振幅 this.opacity = opacity;//透明度 this.cont.style.position = 'relative'; this.move(); } lightWave.prototype = { point:function(n,l,t,c,color){ var p = document.createElement('p'); p.innerHTML = ' '; p.style.top = t + 'px'; p.style.left = l + 'px'; p.style.width = 1 + 'px'; p.style.height = n + 'px'; p.style.filter = 'alpha(opacity='+this.opacity+')'; p.style.lineHeight = 0; p.style.position = 'absolute'; p.style.background = color; c.appendChild(p); return this; }, color:function(){ var c = ['0','3','6','9','c','f']; var t = [c[Math.floor(Math.random()*100)%6],'0','f']; t.sort(function(){return Math.random()>0.5?-1:1;}); return '#'+t.join(''); }, wave:function(){ var l = this.left,t = this.wavelength,color = this.color(); var c = document.createElement('div'); c.style.top = this.amplitude+20+'px'; c.style.position = 'absolute'; c.style.opacity = this.opacity/100; for(var i=1;i<this.thick;i++){ for(var j=0;j<this.thick*this.sharp-i*i;j++,l++){ this.point(i,l,-9999,c,color); } } for(var i=this.thick;i>0;i--){ for(var j=this.thick*this.sharp-i*i;j>0;j--,l++){ this.point(i,l,-9999,c,color); } } this.cont.appendChild(c); return c; }, move:function(){ var wl = this.amplitude; var vibration = this.vibration; var w = this.wave().getElementsByTagName('p'); for(var i=0;i<w.length;i++){ w[i].i = i; } var m = function(){ for(var i=0,len=w.length;i<len;i++){ if(w[i].ori == true){ w[i].i-=vibration; var top = w[i].i%180==90?0:wl*Math.cos(w[i].i*Math.PI/180); w[i].style.top = top+'px'; if(parseFloat(w[i].style.top)<=-wl){ w[i].ori = false; } }else{ w[i].i+=vibration; var top = w[i].i%180==90?0:wl*Math.cos(w[i].i*Math.PI/180); w[i].style.top = top+'px'; if(parseFloat(w[i].style.top)>=wl){ w[i].ori = true; } } } } setInterval(m,this.speed); } } window.onload = function(){ var targetDom = document.body; new lightWave(targetDom,0,3,36,120,6,20,40); new lightWave(targetDom,50,2,70,120,10,30,30); } </script> </head> <body style="background:#000;margin-top:100px"> </body> </html>參數：
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1 2 3 4 5 6 7 8 9 10 11 12 var lightWave = function (T,left,thick,sharp,speed,vibration,amplitude,opacity){ this .cont = T; //需要添加炫光的容器 this .left = left; //炫光出生時的向右偏移量 this .thick = thick; //粗細程度 this .sharp = sharp; //尖銳程度 this .speed = speed; //波動速度 this.vibration = vibration; //單位時間內的振動頻率 this .amplitude = amplitude; //振幅 this .opacity = opacity; //透明度 this .cont.style.position = 'relative'; this .move(); }大家感興趣可以來討論一下。
另外，還遇到個問題，上面代碼中ie下面的透明度濾鏡不起作用，經研究得知，改變父容器的定位會影響子節點的透明濾鏡的繼承。
以上所述就是本文的全部內容了，希望大家能夠喜歡。