Created
November 11, 2013 07:40
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binary clock
二进制时钟
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title></title> | |
| </head> | |
| <body> | |
| <style> | |
| .clock .one{ | |
| width: 16px; | |
| height: 16px; | |
| background: green; | |
| margin-right: 20px; | |
| } | |
| .clock .zero{ | |
| width: 16px; | |
| height: 16px; | |
| background: #ccc; | |
| margin-right: 20px; | |
| } | |
| </style> | |
| <div class="clock"> | |
| <h2><b>h</b></h2> | |
| <div id="hour"></div> | |
| </div> | |
| <div class="clock"> | |
| <h2><b>m</b></h2> | |
| <div id="min"></div> | |
| </div> | |
| <div class="clock"> | |
| <h2><b>s</b></h2> | |
| <div id="sec"></div> | |
| </div> | |
| <script type="text/javascript"> | |
| setInterval("setclock()",1000); | |
| function setclock(){ | |
| var time = new Date(); | |
| var hours = toBin(time.getHours()); | |
| var mins = toBin(time.getMinutes()); | |
| var secs = toBin(time.getSeconds()); | |
| render(hours,'hour'); | |
| render(mins,'min'); | |
| render(secs,'sec'); | |
| } | |
| function toBin(dec) { | |
| var bits = []; | |
| var dividend = dec; | |
| var remainder = 0; | |
| while (dividend >= 2) { | |
| remainder = dividend % 2; | |
| bits.push(remainder); | |
| dividend = (dividend - remainder) / 2; | |
| } | |
| bits.push(dividend); | |
| bits.reverse(); | |
| return bits; | |
| } | |
| function render(value,type){ | |
| var html = ''; | |
| if(type=='hour'){ | |
| html = makedot(value,5); | |
| document.getElementById('hour').innerHTML=html; | |
| }else if(type=='min'){ | |
| html = makedot(value,6); | |
| document.getElementById('min').innerHTML=html; | |
| }else if(type=='sec'){ | |
| html = makedot(value,6); | |
| document.getElementById('sec').innerHTML=html; | |
| } | |
| } | |
| function makedot(value,nums){ | |
| var i=null; | |
| var html = ''; | |
| var length = value.length; | |
| for(var i = 0;i<length;i++){ | |
| if(value[i]){ | |
| html = html+'<span class="one"> </span>'; | |
| }else{ | |
| html = html+'<span class="zero"> </span>'; | |
| } | |
| } | |
| while(length < nums){ | |
| html = '<span class="zero"> </span>'+html; | |
| length++; | |
| } | |
| return html; | |
| } | |
| </script> | |
| </body> | |
| </html> |
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