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HTML5基础教程
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<canvas id="ex4" width="500" height="120" style="border: 1px solid #cccccc;"> HTML5 Canvas not supported </canvas> <script> var canvas = document.getElementById("ex4"); var context = canvas.getContext("2d"); context.stokeStyle = "#000000"; context.lineWidth = 1; context.beginPath(); context.moveTo( 250, 0); context.lineTo( 250, 250); context.stroke(); context.closePath(); context.font = "16px Verdana"; context.fillStyle = "#000000"; context.textAlign = "center"; context.fillText("center", 250, 20); context.textAlign = "start"; context.fillText("start", 250, 40); context.textAlign = "end"; context.fillText("end", 250, 60); context.textAlign = "left"; context.fillText("left", 250, 80); context.textAlign = "right"; context.fillText("right", 250, 100); </script>
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