lineCap Property - Javascript Canvas Reference

Javascript examples for Canvas Reference:lineCap


The lineCap property sets or gets the style of the end caps for a line.

The lineCap's default value is butt.

JavaScript syntax

context.lineCap = "butt|round|square";

Property Values

Value Description
butt Default. A flat edge is added to each end of the line
round A rounded end is added to each end of the line
square A square end is added to each end of the line


Draw a line with rounded end caps:

Demo Code

ResultView the demo in separate window

<!DOCTYPE html>

<p>The three different line caps:</p>
<canvas id="myCanvas" width="300" height="250" style="border:1px solid #d3d3d3;">
Your browser does not support the HTML5 canvas tag.</canvas>


var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");

ctx.beginPath();/*from   w ww  .  ja v a2  s.  c  o m*/
ctx.lineWidth = 10;
ctx.lineCap = "butt";
ctx.moveTo(20, 20);
ctx.lineTo(200, 20);

ctx.lineCap = "round";
ctx.moveTo(20, 40);
ctx.lineTo(200, 40);

ctx.lineCap = "square";
ctx.moveTo(20, 60);
ctx.lineTo(200, 60);



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