How to do wordwrap for chart labels using d3.js

Question

I am trying to implement the horizontal bar chart using d3.js.Some of the chart labels are too long. How to do word wrap for the chart labels on y aixs?

Source code:

Answer 1

Here is a working implementation I've written by pulling together various bits. As the other answer suggests, foreignObject is still the way to go. First the function:

var insertLinebreaks = function (t, d, width) {
    var el = d3.select(t);
    var p = d3.select(t.parentNode);
    p.append("foreignObject")
        .attr('x', -width/2)
        .attr("width", width)
        .attr("height", 200)
      .append("xhtml:p")
        .attr('style','word-wrap: break-word; text-align:center;')
        .html(d);    

    el.remove();

};

This takes in a text element (t), the text content (d), and the width to wrap to. It then gets the parentNode of the text object, and attaches a foreignObject node to it into which an xhtml:p is added. The foreignObject is set to the desired width and offset -width/2 to center. Finally, the original text element is deleted.

This can then be applied to your axis elements as follows:

d3.select('#xaxis')
    .selectAll('text')
        .each(function(d,i){ insertLinebreaks(this, d, x1.rangeBand()*2 ); });

Here I've used rangeBand to get the width (with *2 for 2 bars on the graph).