seajs异步载入

async-seajs.js

// sea.js 的异步载入代码：
;(function(m, o, d, u, l, a, r) {
  if(m[o]) return
  function f(n) { return function() { r.push(n, arguments); return a } }
  m[o] = a = { args: (r = []), config: f(1), use: f(2), on: f(3) }
  m.define = f(0)

  window.addEventListener('load', function () {
    u = d.createElement("script")
    u.id = o + "node"
    u.async = true
    u.src = "http://assets.dev.alipay.net/??handy/base/1.1.0/seajs-intro.js,seajs/seajs/2.1.1/sea.js,seajs/seajs-combo/1.0.0/seajs-combo.js,handy/jquto/1.0.2/jquto.js,handy/base/1.1.0/seajs-outro.js"
    l = d.getElementsByTagName("head")[0]
    l.appendChild(u)
  });
})(window, "seajs", document);