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HTML canvas addColorStop() Method

HTML Canvas Reference

Example

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

JavaScript:

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;
ctx.fillRect(20,20,150,100);

Try it yourself »

Browser Support

Internet Explorer 9, Firefox, Opera, Chrome, and Safari support the addColorStop() method.

Note: Internet Explorer 8 and earlier versions, do not support the <canvas> element.

Definition and Usage

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

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

Note: You can call the addColorStop() method multiple times to change a gradient. If you omit this method for gradient objects, the gradient will not be visible. You need to create at least one color stop to have a visible gradient.

JavaScript syntax:	gradient.addColorStop(stop,color);

Parameter Values

Parameter	Description	Play it
stop	A value between 0.0 and 1.0 that represents the position between start and end in a gradient	Play it »
color	A CSS color value to display at the stop position	Play it »

More Examples

Example

Define a gradient with multiple addColorStop() methods:

JavaScript:

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

var grd=ctx.createLinearGradient(0,0,170,0);
grd.addColorStop(0,"black");
grd.addColorStop("0.3","magenta");
grd.addColorStop("0.5","blue");
grd.addColorStop("0.6","green");
grd.addColorStop("0.8","yellow");
grd.addColorStop(1,"red");

ctx.fillStyle=grd;
ctx.fillRect(20,20,150,100);

Try it yourself »

HTML Canvas Reference