精选的Javascript实例.pdf

精选的JavaScript 实例 精选的JavaScript 实例 1. 纯JavaScript 时钟 脚本说明 第一步：把如下代码加入head 区域中: SCRIPT language=javascript !-- pX=400;pY=200 obs = new Array(13) function ob () { for (i=0; i13; i++) { if (document.all) obs[i]=new Array (eval(ob+i).style,-100,-100) else obs[i] = new Array (eval(document.ob+i),-100,-100) } } function cl(a,b,c){ if (document.all) { if (a!=0) b+=-1 eval(c+a+.style.pixelTop=+(pY+(c))) eval(c+a+.style.pixelLeft=+(pX+(b))) } else{ if (a!=0) b+=10 eval(document.c+a+.top=+(pY+(c))) eval(document.c+a+.left=+(pX+(b))) } if (document.all) c0.style.pixelLeft=26 } function runClock() { for (i=0; i13; i++) { obs[i][0].left=obs[i][1]+pX obs[i][0].top=obs[i][2]+pY } } var lastsec function timer() { time = new Date () sec = time.getSeconds() if (sec!=lastsec) { lastsec = sec sec=Math.PI*sec/30 min=Math.PI*time.getMinutes()/30 hr =Math.PI*((time.getHours()*60)+time.getMinutes())/360 for (i=1;i6;i++) { obs[i][1] = Math.sin(sec) * (44 - (i-1)*11)-16; if (document.layers)obs[i][1]+=10; obs[i][2] = -Math.cos(sec) * (44 - (i-1)*11)-27; } for (i=6;i10;i++) { obs[i][1] = Math.sin(min) * (40 - (i-6)*10)-16; if (document.layers)obs[i][1]+=10; obs[i][2] = -Math.cos(min) * (40 - (i-6)*10)-27; } for (i=10;i13;i++) { obs[i][1] = Math.sin(hr) * (37 - (i-10)*11)-16; if (document.layers)obs[i][1]+=10; obs[i][2] = -Math.cos(hr) * (37 - (i-10)*11)-27; } } } function setNum(){ cl (0,-67,-65); cl (1,10,-51); cl (2,28,-33); cl (3,35,-8); cl (4,28,17); cl (5,10,35); cl (6,-15,42); cl (7,-40,35); cl (8,-58,17); cl (9,-65,-8); cl (10,-58,-33); cl (11,-40,-51); cl (12,-16,-56); } //-- /SCRIPT 第二步:把body 中加入如下代码： div id=c0 style=position:absolute;right:6;top:6; z-index:2; /div