* Internet Explorer 7 and 8 require the third-party explorercanvas library. Internet Explorer 9 supports <canvas> shapes natively. Every canvas starts out blank. Thatâs boring! Letâs draw something. Click to draw on this canvas The onclick handler called this function: function draw_b() { var b_canvas = document.getElementById("b"); var b_context = b_canvas.getContext("2d"); b_context.fillRect(50,
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