Meteor.js：ReferenceError：未定義窗口

Question

我正嘗試使用Meteor.js創建多路徑Web應用程序。我添加了iron：router軟件包，並在「lib」文件夾（根目錄）中創建了以下router.js文件。它看起來像這樣：

////////////////////////// 
// Router 
////////////////////////// 

Router = { 
    uri: _.compact(window.location.pathname.split("/")), 
    routes: [], 

    addRoute: function(route, template) { 
     var segments = _.compact(route.split("/")); 

     var placeholders = _.reduce(segments, function(currentArr, piece, index) { 
      if (piece.substr(0, 1) === ":") { 
       currentArr.push(index); 
       segments[index] = piece.substr(1); 
      } 
      return currentArr; 
     }, []); 

     this.routes.push({ 
      route: segments, 
      template: template, 
      placeholderIndexes: placeholders 
     }); 
    }, 
    getMatchingRoute: function(){ 
     for (var i in this.routes) { 
      var route = this.routes[i]; 
      var data = {}; 

      if (route.segments.length === this.uri.length) { 
       var match = _.every(route.segments, function(seg, i){ 
         if (_.contains(route.placeholderIndexes, i)) { 
          data[seg] = this.uri[i]; 
          return true; 
         } else { 
          return seg === this.uri[i]; 
         } 
       }, this); 

       if (match) { 
         return { 
          data: data, 
          template: route.template 
         } 
       } 
      } 
     } 
     //no matches (add 404 or default template maybe?) 
     return false; 
    }, 
    run: function(){ 
     var route = this.getMatchingRoute(); 
     if (route) { 
      var fragment = Meteor.render(function() { 
       if (Template[route.template] !== undefined) { 
        return Template[route.template](route.data); 
       } 
      }); 

      document.body.appendChild(fragment); 
     } else { 
      //404 
     } 
    } 
}; 

當本地流星服務器上運行，我得到了以下的輸出：

=> Started proxy.        
=> Started MongoDB.       

W20160211-10:47:37.487(-8)? (STDERR)   
W20160211-10:47:37.487(-8)? (STDERR) /Users/***************/.meteor/packages/meteor-tool/.1.1.10.1b51q9m++os.osx.x86_64+web.browser+web.cordova/mt-os.osx.x86_64/dev_bundle/server-lib/node_modules/fibers/future.js:245 
W20160211-10:47:37.488(-8)? (STDERR)      throw(ex); 
W20160211-10:47:37.488(-8)? (STDERR)       ^
W20160211-10:47:37.488(-8)? (STDERR) ReferenceError: window is not defined 
W20160211-10:47:37.488(-8)? (STDERR)  at lib/router.js:6:20 
W20160211-10:47:37.488(-8)? (STDERR)  at /Users/************/www/myapp/.meteor/local/build/programs/server/app/lib/router.js:77:4 
W20160211-10:47:37.488(-8)? (STDERR)  at /Users/************/www/myapp/.meteor/local/build/programs/server/boot.js:242:10 
W20160211-10:47:37.488(-8)? (STDERR)  at Array.forEach (native) 
W20160211-10:47:37.489(-8)? (STDERR)  at Function._.each._.forEach (/Users/************/.meteor/packages/meteor-tool/.1.1.10.1b51q9m++os.osx.x86_64+web.browser+web.cordova/mt-os.osx.x86_64/dev_bundle/server-lib/node_modules/underscore/underscore.js:79:11) 
W20160211-10:47:37.489(-8)? (STDERR)  at /Users/*************/www/myapp/.meteor/local/build/programs/server/boot.js:137:5 
=> Exited with code: 8 
W20160211-10:47:41.062(-8)? (STDERR)   
W20160211-10:47:41.062(-8)? (STDERR) /Users/*************/.meteor/packages/meteor-tool/.1.1.10.1b51q9m++os.osx.x86_64+web.browser+web.cordova/mt-os.osx.x86_64/dev_bundle/server-lib/node_modules/fibers/future.js:245 
W20160211-10:47:41.063(-8)? (STDERR)      throw(ex); 
W20160211-10:47:41.063(-8)? (STDERR)       ^
W20160211-10:47:41.069(-8)? (STDERR) ReferenceError: window is not defined 
W20160211-10:47:41.069(-8)? (STDERR)  at lib/router.js:6:20 
W20160211-10:47:41.069(-8)? (STDERR)  at /Users/************/www/myapp/.meteor/local/build/programs/server/app/lib/router.js:77:4 
W20160211-10:47:41.069(-8)? (STDERR)  at /Users/*************/www/myapp/.meteor/local/build/programs/server/boot.js:242:10 
W20160211-10:47:41.070(-8)? (STDERR)  at Array.forEach (native) 
W20160211-10:47:41.070(-8)? (STDERR)  at Function._.each._.forEach (/Users/*************/.meteor/packages/meteor-tool/.1.1.10.1b51q9m++os.osx.x86_64+web.browser+web.cordova/mt-os.osx.x86_64/dev_bundle/server-lib/node_modules/underscore/underscore.js:79:11) 
W20160211-10:47:41.070(-8)? (STDERR)  at /Users/**************/www/myapp/.meteor/local/build/programs/server/boot.js:137:5 
=> Exited with code: 8 
W20160211-10:47:44.633(-8)? (STDERR)   
W20160211-10:47:44.634(-8)? (STDERR) /Users/**************/.meteor/packages/meteor-tool/.1.1.10.1b51q9m++os.osx.x86_64+web.browser+web.cordova/mt-os.osx.x86_64/dev_bundle/server-lib/node_modules/fibers/future.js:245 
W20160211-10:47:44.634(-8)? (STDERR)      throw(ex); 
W20160211-10:47:44.634(-8)? (STDERR)       ^
W20160211-10:47:44.640(-8)? (STDERR) ReferenceError: window is not defined 
W20160211-10:47:44.640(-8)? (STDERR)  at lib/router.js:6:20 
W20160211-10:47:44.641(-8)? (STDERR)  at /Users/***************/www/myapp/.meteor/local/build/programs/server/app/lib/router.js:77:4 
W20160211-10:47:44.641(-8)? (STDERR)  at /Users/***************/www/myapp/.meteor/local/build/programs/server/boot.js:242:10 
W20160211-10:47:44.641(-8)? (STDERR)  at Array.forEach (native) 
W20160211-10:47:44.641(-8)? (STDERR)  at Function._.each._.forEach (/Users/***************/.meteor/packages/meteor-tool/.1.1.10.1b51q9m++os.osx.x86_64+web.browser+web.cordova/mt-os.osx.x86_64/dev_bundle/server-lib/node_modules/underscore/underscore.js:79:11) 
W20160211-10:47:44.641(-8)? (STDERR)  at /Users/**************/www/myapp/.meteor/local/build/programs/server/boot.js:137:5 
=> Exited with code: 8 
=> Your application is crashing. Waiting for file change. 

這是怎麼回事？爲什麼它不識別窗口變量。

Answer 1

lib中的項目都在服務器和客戶端上運行。由於服務器上不存在window，因此會引發錯誤。