ullamlaboriosam/src/plugins/attr/attr.js

Lightweight and intuitive javascript library

// Handle attributes for the matched elements
u.prototype.attr = function (name, value, data) {
  data = data ? 'data-' : '';

  if (value !== undefined) {
    var nm = name;
    name = {};
    name[nm] = value;
  }

  if (typeof name === 'object') {
    return this.each(function (node) {
      for (var key in name) {
        node.setAttribute(data + key, name[key]);
      }
    });
  }

  return this.length ? this.first().getAttribute(data + name) : '';
};