HTML canvas addColorStop() Method

Introduction

Define a gradient that goes from black to white, as the fill style for the rectangle:

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<!DOCTYPE html>
<html>
<body>

<canvas id="myCanvas" width="300" height="180" style="border:1px solid #d3d3d3;">
Your browser does not support the HTML5 canvas tag.</canvas>

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

var grd = ctx.createLinearGradient(0, 0, 170, 0);
grd.addColorStop(0, "black");
grd.addColorStop(1, "white");

ctx.fillStyle = grd;/*  w ww  . ja v a2  s .  co  m*/
ctx.fillRect(20, 20, 150, 100);
</script>

</body>
</html>

The addColorStop() method specifies the colors and position in a gradient object.

The addColorStop() method is used together with createLinearGradient() or createRadialGradient().

You can call the addColorStop() method multiple times to change a gradient. 

gradient.addColorStop(stop, color);

Parameter Values

Parameter Description
stop A value between 0.0 and 1.0. the position between start and end in a gradient
color A CSS color value to display at the stop position



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