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Showing content from https://webplatform.github.io/docs/apis/canvas/CanvasRenderingContext2D/save below:

save · WebPlatform Docs

Saves the current state of the context. Use the restore() method to retrieve the saved state.

Method of apis/canvas/CanvasRenderingContext2Dapis/canvas/CanvasRenderingContext2D

var object = object.save();

Returns an object of type DOM NodeDOM Node

Type: HRESULT

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

<canvas id="myCanvas" width="300" height="150" style="border:1px solid blue;"></canvas>
<p>. . .</p>
<script>
var can=document.getElementById("myCanvas");
var ctxt=can.getContext("2d");
ctxt.rect(50,50,125,75);
ctxt.stroke();
ctxt.save();
ctxt.restore();
</script>

The save and restore methods preserve and restore the state of a context, but not specific paths or graphics. The following attributes and states are affected:

• The current transformation matrix
• The current clipping region
• The current values of the following attributes:
  • strokeStyle
  • fillStyle
  • globalAlpha
  • lineWidth
  • lineCap
  • lineJoin
  • miterLimit

W3C HTML Canvas 2D Specification

W3C Candidate Recommendation

• Microsoft Developer Network: Windows Internet Explorer API reference Article

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