HTML canvas addColorStop() Method
Canvas ObjectExample
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);
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Browser Support
The numbers in the table specify the first browser version that fully supports the method.
| Method | |||||
|---|---|---|---|---|---|
| addColorStop() | 4.0 | 9.0 | 3.6 | 4.0 | 10.1 |
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);
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