Created
November 13, 2015 14:15
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JS Bin // source http://jsbin.com/koyoqiyuti
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>JS Bin</title> | |
| <style id="jsbin-css"> | |
| html, body { | |
| height: 100%; | |
| margin: 0; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <canvas id="canvas"></canvas> | |
| <script id="jsbin-javascript"> | |
| var canvas = document.querySelector('#canvas'), | |
| ctx = canvas.getContext('2d'); | |
| var w = 4, | |
| h = 3; | |
| canvas.width = w; | |
| canvas.height = h; | |
| for (var i = 0; i < w * h; i++) { | |
| var y = Math.floor(i / w), | |
| x = i % w, | |
| fill; | |
| if (y == 1 || x == 1) { | |
| fill = '#ccc'; | |
| } else { | |
| fill = 'white'; | |
| } | |
| ctx.fillStyle = fill; | |
| ctx.fillRect(x, y, 1, 1); | |
| } | |
| var url = canvas.toDataURL('image/png'); | |
| var style = 'url(\'' + url + '\') no-repeat cover'; | |
| var bs = document.querySelector('body').style; | |
| bs.backgroundImage = 'url(' + url + ')'; | |
| bs.backgroundRepeat = 'no-repeat'; | |
| bs.backgroundSize = 'cover'; | |
| bs.backgroundPosition = '50% 50%'; | |
| </script> | |
| <script id="jsbin-source-css" type="text/css">html, body { | |
| height: 100%; | |
| margin: 0; | |
| }</script> | |
| <script id="jsbin-source-javascript" type="text/javascript">var canvas = document.querySelector('#canvas'), | |
| ctx = canvas.getContext('2d'); | |
| var w = 4, | |
| h = 3; | |
| canvas.width = w; | |
| canvas.height = h; | |
| for (var i = 0; i < w * h; i++) { | |
| var y = Math.floor(i / w), | |
| x = i % w, | |
| fill; | |
| if (y == 1 || x == 1) { | |
| fill = '#ccc'; | |
| } else { | |
| fill = 'white'; | |
| } | |
| ctx.fillStyle = fill; | |
| ctx.fillRect(x, y, 1, 1); | |
| } | |
| var url = canvas.toDataURL('image/png'); | |
| var style = 'url(\'' + url + '\') no-repeat cover'; | |
| var bs = document.querySelector('body').style; | |
| bs.backgroundImage = 'url(' + url + ')'; | |
| bs.backgroundRepeat = 'no-repeat'; | |
| bs.backgroundSize = 'cover'; | |
| bs.backgroundPosition = '50% 50%';</script></body> | |
| </html> |
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| html, body { | |
| height: 100%; | |
| margin: 0; | |
| } |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| var canvas = document.querySelector('#canvas'), | |
| ctx = canvas.getContext('2d'); | |
| var w = 4, | |
| h = 3; | |
| canvas.width = w; | |
| canvas.height = h; | |
| for (var i = 0; i < w * h; i++) { | |
| var y = Math.floor(i / w), | |
| x = i % w, | |
| fill; | |
| if (y == 1 || x == 1) { | |
| fill = '#ccc'; | |
| } else { | |
| fill = 'white'; | |
| } | |
| ctx.fillStyle = fill; | |
| ctx.fillRect(x, y, 1, 1); | |
| } | |
| var url = canvas.toDataURL('image/png'); | |
| var style = 'url(\'' + url + '\') no-repeat cover'; | |
| var bs = document.querySelector('body').style; | |
| bs.backgroundImage = 'url(' + url + ')'; | |
| bs.backgroundRepeat = 'no-repeat'; | |
| bs.backgroundSize = 'cover'; | |
| bs.backgroundPosition = '50% 50%'; |
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