d3 extensions: attrs() method - allow specification of attrs as a hash instead chained attr().attr().attr()....

d3_attrs_extension.js

if(d3 && d3.selection && d3.selection.prototype) {
  
  d3sp = d3.selection.prototype;

  /** add extension functions to d3.selection */
  
  /** attrs - set many attrs on a data node given a hash of attributes 

      usage:
      
      selection.append('text')
        .attrs({
          x: -18,
          y: -17,
          fill:'pink',
       });
  */
  d3sp.attrs = function(attrs) {
    for(var k in attrs) {
      var v = attrs[k]
      this.attr(k,v);
    }
    return this;
  };
}

I'm a JavaScript novice, but I noticed that I had to add a self = this; reference to set this.attr(k,v); in my case. I'm using CoffeeScript and the Meteor framework.

Thanks for the gist!