Add ellipses to overflowing text in SVG?

a wrapper function for overflowing text:

    function wrap() {
        var self = d3.select(this),
            textLength = self.node().getComputedTextLength(),
            text = self.text();
        while (textLength > (width - 2 * padding) && text.length > 0) {
            text = text.slice(0, -1);
            self.text(text + '...');
            textLength = self.node().getComputedTextLength();
        }
    } 

usage:

text.append('tspan').text(function(d) { return d.name; }).each(wrap);