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lineWidth property

The lineWidth property sets the line width when drawing on the canvas.

Syntax

context.lineWidth = integer;

Example

Let's draw a line and set its width to 5 pixels:

<canvas id="canvas" width="200" height="200" style="background: #f4f4f4;"></canvas> let canvas = document.querySelector('#canvas'); let ctx = canvas.getContext('2d'); ctx.beginPath(); ctx.lineWidth = 5; // 5px width ctx.moveTo(50, 50); ctx.lineTo(150, 50); ctx.stroke();

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Example

Width can also be changed for strokes, such as those drawn with rect:

<canvas id="canvas" width="200" height="200" style="background: #f4f4f4;"></canvas> let canvas = document.querySelector('#canvas'); let ctx = canvas.getContext('2d'); ctx.rect(50, 50, 100, 100); ctx.lineWidth = 5; ctx.stroke();

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See also

  • the lineCap property
    that sets the type of a line end
  • the lineJoin property
    that sets lines join style
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