Created
May 20, 2013 20:25
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| <!DOCTYPE HTML> | |
| <html> | |
| <head> | |
| <title> Canvas Test</title> | |
| </head> | |
| <body> | |
| <canvas id="canvas"> | |
| <script> | |
| canvas.height = window.screen.height; | |
| canvas.width = window.screen.width; | |
| var columns = [] | |
| var character =0; | |
| for (i = 0; i < 256; columns[i++] = 1); | |
| function step() { | |
| canvas.getContext('2d').fillStyle = 'rgba(0,0,0,0.05)'; | |
| canvas.getContext('2d').fillRect(0, 0, canvas.width, canvas.height); | |
| canvas.getContext('2d').fillStyle = '#0F0'; | |
| columns.map(function (value, index) { | |
| canvas.getContext('2d').fillText(character, //text | |
| index * 10, //x | |
| value //y | |
| ); | |
| if(character==0) | |
| character=1; | |
| else | |
| character=0; | |
| columns[index] = value > 758 + Math.random() * 1e4 ? 0 : value + 10 | |
| }) | |
| } | |
| setInterval(step, 33) | |
| </script> | |
| </body> | |
| </html> |
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