{"id":31347,"date":"2024-11-25T13:53:27","date_gmt":"2024-11-25T05:53:27","guid":{"rendered":"https:\/\/fwq.ai\/blog\/31347\/"},"modified":"2024-11-25T13:53:27","modified_gmt":"2024-11-25T05:53:27","slug":"%e5%be%ae%e4%bf%a1%e5%b0%8f%e7%a8%8b%e5%ba%8fcanvas%e5%9f%ba%e7%a1%80%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/31347\/","title":{"rendered":"\u5fae\u4fe1\u5c0f\u7a0b\u5e8fcanvas\u57fa\u7840\u8be6\u89e3"},"content":{"rendered":"

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\u4e00.\u4e86\u89e3canvas<\/span><\/span><\/p>\n

\"\u5fae\u4fe1\u5c0f\u7a0b\u5e8fcanvas\u57fa\u7840\u8be6\u89e3\u63d2\u56fe\"
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      canvas \u6807\u7b7e\u9ed8\u8ba4\u5bbd\u5ea6300px\u3001\u9ad8\u5ea6225px\u3002
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\/**canvas.wxss*\/\r\n.myCanvas{\r\n    border: 1px solid #ccc;\r\n    width:100%;\r\n    height:250px;\r\n}<\/pre>\n
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\u4e8c.\u5728canvas\u4e2d\u7ed8\u5236\u56fe\u5f62<\/span><\/span><\/p>\n
(1).\u6b65\u9aa4<\/span><\/span><\/p>\n
wxml\u4e2d\uff1a<\/span><\/span><\/p>\n
<canvas s=\"myCanvas\"><\/canvas><\/pre>\n
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<\/span><\/span><\/p>\n
1.\u521b\u5efa\u4e00\u4e2a Canvas \u7ed8\u56fe\u4e0a<\/span><\/span><\/p>\n
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const ctx = wx.createCanvasContext('myCanvas')<\/pre>\n
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ctx.setFillStyle('red')<\/pre>\n
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ctx.fillRect(10, 10, 150, 75)<\/pre>\n
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3.\u7ed8\u5236<\/span><\/span><\/p>\n
ctx.draw()<\/pre>\n
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(2).\u4ee3\u7801<\/span><\/span><\/p>\n
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\/\/canvas.js \r\n\/\/\u83b7\u53d6\u5e94\u7528\u5b9e\u4f8b  \r\nvar app = getApp()  \r\nPage({\r\n\tonLoad: function() {\r\n\t\tconst ctx = wx.createCanvasContext('myCanvas');\r\n\t\tctx.setFillStyle('red');\r\n\t\tctx.fillRect(10, 10, 150, 75);\r\n\t\tctx.draw();\r\n\t}\r\n})<\/pre>\n
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(3).\u6548\u679c<\/span><\/span><\/p>\n
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\u76f8\u5173\u63a8\u8350\uff1a<\/span><\/span><\/p>\n<\/p>\n
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