案例:html/html5 案例     状态:可编辑再运行    进入竖版
 运行结果 
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<!DOCTYPE html>
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<html>
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<body>
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<canvas id="myCanvas" width="300" height="150" style="border:1px solid #d3d3d3;">
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Your browser does not support the HTML5 canvas tag.</canvas>
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<script type="text/javascript">
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var c=document.getElementById("myCanvas");
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var ctx=c.getContext("2d");
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ctx.font="30px Verdana";
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// Create gradient
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var gradient=ctx.createLinearGradient(0,0,c.width,0);
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gradient.addColorStop("0","magenta");
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gradient.addColorStop("0.5","blue");
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gradient.addColorStop("1.0","red");
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// Fill with gradient
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ctx.strokeStyle=gradient;
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ctx.strokeText("w3xue.com",10,50);
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</script>
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</body>
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</html>
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