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HTML Canvas save() 方法
tryhtml5_canvas_save
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<!DOCTYPE html> <html> <body> <h1>HTML5 Canvas</h1> <h2>The save() Method</h2> <canvas id="myCanvas" width="300" height="150" style="border:1px solid grey"></canvas> <script> const c = document.getElementById("myCanvas"); const ctx = c.getContext("2d"); // Draw ctx.fillStyle = "green"; ctx.fillRect(10, 10, 50, 50); // Save the state ctx.save(); // Draw new ctx.fillStyle = "red"; ctx.fillRect(100, 10, 50, 50); // Restore saved state ctx.restore(); // Draw new ctx.fillRect(200, 10, 50, 50); </script> </body> </html>