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html5 has been out for a long time, but I have only recently started to come into contact with it. HTML5 provides many built-in functions that can achieve many functions, such as drawing line segments, drawing rectangles, drawing circles, drawing arcs, etc. However, HTML5 does not provide the function of drawing dotted lines. If you want to draw curves on canvas, it will take a little effort. Here are two ways to implement the function of drawing dotted lines: Method one is to write a separate function, and just call this curve when you want to draw a curve. function drawDashLine(context, x, y, x2, y2, dashLength) {

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