动态创建命名空间

动态创建命名空间

var MyApp = {};

MyApp.namespace = function (name) {
  var parts = name.split('.');
  var current = MyApp;
  for (var i in parts) {
    if ( !current[ parts[i] ] ) {
      current[ parts[i] ] = {};
    }
    current = current[ parts[i] ];
  }
};

MyApp.namespace( 'event' );
MyApp.namespace( 'dom.style' );

// 上述代码等价于

var MyApp = {
  event: {},
  dom: {
    style: {}
  }
}