- JS网页特效：星空极速飞入效果，有点3D穿越的感觉，背景要设成蓝色或黑色，否则看不到星星。这是一个很不错的JavaScript生成随机数的范例，希望大家喜欢。
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<script language="JavaScript">xL=8;xH=xW=xR=xE=xMY=xMX=xWd=xHd=0;xF=new Array();xY=new Array();xX=new Array();xS=new Array();xA=new Array();xB=new Array();ini=new Array();document.write('<div id="sdiv" style="position:absolute;top:0px;left:0px"><div style="position:relative">');for (i=0; i < xL; i++){document.write('<div id="div" style="position:absolute;top:0;left:0;width:5px;height:5px;'+'font-size:10px;color:#ffffff">.</div>');}document.write('</div></div>');function Set(){for (i=0; i < xL; i++){transfer(i)xF[i]=xW/14;}}function Assign(){sdiv.style.top=document.body.scrollTop;for (i=0; i < xL; i++){xF[i]-=xS[i]*25;if (xF[i] < 4) xF[i]=3;div[i].style.top =xY[i];div[i].style.left=xX[i];div[i].style.fontSize=xF[i];}}function fly(){xMY=window.document.body.clientHeight/2;xMX=window.document.body.clientWidth/2;xWd=Math.round(Math.random()*40+5);xHd=Math.round(Math.random()*30+5);for (i=0; i < xL; i++){xY[i]=xA[i]+=(xMY-xA[i])*(xS[i]);xX[i]=xB[i]+=(xMX-xB[i])*(xS[i]);if ((xX[i] > xMX-xWd) && (xX[i] < xMX+xWd) && (xY[i] > xMY-xHd) && (xY[i] < xMY+xHd)){transfer(i)}if ((xX[i]<0)||(xX[i]>xW)||(xY[i]<0)||(xY[i]>xH)){xF[i]=xW/14;}}Assign();setTimeout('fly()',1);}function transfer(i){xH=window.document.body.offsetHeight;xW=window.document.body.offsetWidth;xA[i]=Math.round(Math.random()*xH);xB[i]=Math.round(Math.random()*xW);xS[i]=Math.random()*0.05+0.05;xR=Math.round(Math.random()*3);xE=Math.round(Math.random()*50+50);if (xR == 3) xB[i]=-xE;if (xR == 2) xB[i]=xW+xE;if (xR == 1) xA[i]=-xE;if (xR == 0) xA[i]=xH;}Set();fly();</script>
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