JavaScript 动态创建命名空间

let App = {};
App.namespace = function(name) {
let parts = name.split('.');
let current = App;
for (let i in parts) {
if (!current[parts[i]]) { current[parts[i]] = {}; }
current = current[parts[i]];
}
};
​App.namespace('event');App.namespace('configMap.html');

上面的代码等价于

let App = {
event: {},
configMap: {
html: {}
}
};