How to know if raphael object is hidden?

Question

I am creating a diagram application in which I hide and show few elements e.g.

var c = paper.circle(10, 10, 10);
c.hide()

var c2 = paper.circle(10, 10, 10);
c2.         


        

Answer 1

I took a look at the documentation and source code and cooked this up (untested):

Raphael.el.is_visible = function() {
    return (this.node.style.display !== "none");
}

Call as follows:

var c = paper.circle(10, 10, 10);
c.hide();
if (c.is_visible())
    alert("Visible");
else
    alert("Invisible");