lineCap property

The lineCap property sets the type of a line end. Can take the following values: butt - flat end (default), round - rounded end, square - square end.

Syntax

javascriptcontext.lineCap = 'butt', 'round' or 'square';

Example

Let's draw some lines and set the first to butt, the second to round, and the third to square. Pay attention to the red line - it marks the set beginning of the line (and round and square climb out of it):

html<canvas id="canvas" width="200" height="200" style="background: #f4f4f4;"></canvas>

javascriptlet canvas = document.querySelector('#canvas');
let ctx = canvas.getContext('2d');

ctx.beginPath();
ctx.lineWidth = 10;
ctx.lineCap = 'butt';
ctx.moveTo(75, 50);
ctx.lineTo(75, 150);
ctx.stroke();

ctx.beginPath();
ctx.lineWidth = 10;
ctx.lineCap = 'round';
ctx.moveTo(105, 50);
ctx.lineTo(105, 150);
ctx.stroke();

ctx.beginPath();
ctx.lineWidth = 10;
ctx.lineCap = 'square';
ctx.moveTo(135, 50);
ctx.lineTo(135, 150);
ctx.stroke();

ctx.beginPath();
ctx.lineWidth = 1;
ctx.lineCap = 'butt';
ctx.strokeStyle = 'red';
ctx.moveTo(60, 50);
ctx.lineTo(150, 50);
ctx.stroke();

Результат:

See also