How to remove grey color line from CANVAS in the jSignature plugin?

Question

How to remove grey color line from CANVAS (Signature panel) in the jSignature plugin ?

Is there any option to validate whether user enter signature or not ? Any built in function for this ?

http://willowsystems.github.com/jSignature/#/demo/

Answer 1

How about this setting the decor-color to transparent

$(document).ready(function() {
        $("#signature").jSignature({
            'background-color': 'transparent',
            'decor-color': 'transparent',
        });
    });

Answer 2

I am afraid there is no option to turn it off, so the only solution would be to change the plug-in code itself

There is a section in the plug-in that draws the base line. Just comment out like this

// signature line
ctx.strokeStyle = settings['decor-color']
ctx.shadowOffsetX = 0
ctx.shadowOffsetY = 0
var lineoffset = Math.round( ch / 5 )
//basicLine(ctx, lineoffset * 1.5, ch - lineoffset, cw - (lineoffset * 1.5), ch - lineoffset)
ctx.strokeStyle = settings.color