如何使用快速js中的app.set()访问变量集

Question

我如何访问使用express的变量设置app.set()为例如

app.set('view engine','jade');
app.set('jsDirectory',/js/');

从指南,我明白我可以访问相同的使用app.get(<key>),但这是输出console.log(app.get('view engine')).

{ router:
   { app:
      { stack: [Object],
        domain: null,
        _events: [Object],
        _maxListeners: 10,
        _connections: 0,
        connections: [Getter/Setter],
        allowHalfOpen: true,
        _handle: null,
        httpAllowHalfOpen: false,
        cache: {},
        settings: [Object],
        redirects: {},
        isCallbacks: {},
        _locals: [Object],
        dynamicViewHelpers: {},
        errorHandlers: [],
        route: '/',
        routes: [Circular],
        router: [Getter],
        root: 'C:\\Users\\Shahal\\Works\\App',
        models: {},
        extensions: {},
        disconnectSchemas: [Function: disconnectSchemas],
        passport: [Object] },
     routes: {},
     params: {},
     _params: [],
     middleware: [Function] } }

Answer 1

它们通过app.settings对象可用:

app.set('oneSetting', 'one');
app.set('twoSetting', 'two');
app.set('view engine','jade');

console.log(app.settings.oneSetting);
console.log(app.settings.twoSetting);
console.log(app.settings['view engine']);

Answer 2

我知道这是2岁,但它仍然是谷歌弹出的第一个链接所以我认为这可能是合适的.

您也可以像这样设置变量

     app.set('port', 3000);

后来得到它

     app.get('port');

我更喜欢这种方法,因为它更短更直接.它也是他们在Express 4.x文档中使用的方式.

    app.get(name)
    Returns the value of name app setting, where name is one of strings in the app settings table.