Function createCache

src/modules/jquery.js:959–972

* Create key-value caches of limited size * @returns {function(string, object)} Returns the Object data after storing it on itself with * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength) * deleting the oldest entry

()

     *	deleting the oldest entry
     */
    function createCache() {
      var keys = [];

      function cache(key, value) {
        // Use (key + " ") to avoid collision with native prototype properties
        // (see https://github.com/jquery/sizzle/issues/157)
        if (keys.push(key + ' ') > Expr.cacheLength) {
          // Only keep the most recent entries
          delete cache[keys.shift()];
        }
        return (cache[key + ' '] = value);
      }
      return cache;
    }

    /**
     * Mark a function for special use by jQuery selector module