Js片段

[ilife5]

js引入

seajs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)
  u = d.createElement("script")
  u.id = o + "node"
  u.async = true
  u.src = "path/to/sea.js"
  l = d.getElementsByTagName("head")[0]
  l.appendChild(u)
})(window, "seajs", document);

匹配url中path部分的最后一个路径部分

/:\/\/.*\/([^/?#]*)((?=[?#])|$)/

创造一个cache

var CACHELENGTH = 10000;

function createCache() {
    var cache,
        keys = [];

    return (cache = function( key, value ) {
        if ( keys.push( key ) > CACHELENGTH ) {
            delete cache[ keys.shift() ];
        }
        return (cache[ key ] = value);
    });
}