javascript - How to flip a path drawn on HTML canvas -

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I am trying to draw a drawing drawn on canvas . Please see the code. Please note that 'L' is coming in code if I code ctx.scale (1, -1); is denied anything, so nothing is provided.

When you flip the canvas, the path is pulled out of the canvas area, you can also translate the canvas To do: 

  ctx.translate (0, canvas.height);   
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