The strokeStyle property

The strokeStyle option is a property, usually a string, that is used to set the color used to do stroking on the canvas. For example the strokeRect and stroke functions both use this setting to determine the color that they use.

As well as a string it can be a linear/radial gradient or a pattern. More about these at the links below.

An example

<script>
    window.onload = function ()
    {
        var canvas  = document.getElementById("cvs");
        var context = canvas.getContext('2d');

        var x      = 50;
        var y      = 50;
        var width  = 100;
        var height = 100;
    
        context.strokeStyle = 'red';
        context.strokeRect(x, y, width, height);
    }
</script>

See also:

• Patterns
• Linear gradients
• Radial gradients
• About canvas color definitions