_.extend 方法在 Underscore.js 中返回“位置未定义”答案

【问题标题】：_.extend method returns "place is not defined" in Underscore.js_.extend 方法在 Underscore.js 中返回“位置未定义”
【发布时间】：2014-10-24 21:17:02
【问题描述】：

我是JS的新手。

我正在尝试执行以下调用：

this.compiled(_.extend(this.terminals[i], {clazz: 'all'}, obj));

在调试中我看到了

_.extend(this.terminals[i], {clazz: 'all'}, obj)

Object {terminalId: 3, city: Object, street: "Победы", houseNumber: "5", cost: 1…}city: Objectid: 1name: "Москва"__proto__: Objectclazz: "all"clazz2: ""cost: 1description: "Третий терминал"houseNumber: "5"id: 3mapLat: 55.57834420000001mapLng: 37.59668899999999numberOfCase: 0numberOfEmptyCase: 0numberShow: 0street: "Победы"terminalId: 3timeOfShow: 0__proto__: Object

在控制台之后我看到了

Uncaught ReferenceError:     place is not defined              VM141:16
      (anonymous function)                                     VM141:16
      template                                                 underscore.js:1269
      window.MARC.addTerminalPage.showTerminalsMain.           addTerminal:792
      renderTerminalsOnMap                                     addTerminal:1144
      k                                                        jquery-1.8.2.min.js:2
      l.                                                       fireWith jquery-1.8.2.min.js:2
      y jquery-1.8.2.min.js:2send.d

问题的原因是什么以及如何解决？

更新：

更多细节：

message: "place is not defined"stack: "ReferenceError: place is not defined↵    at Object.eval (eval at <anonymous> (http://localhost:9090/resources/js/underscore.js:1261:16), <anonymous>:16:9)↵    at Object._.template.template [as compiled] (http://localhost:9090/resources/js/underscore.js:1269:21)↵    at Object.eval (eval at evaluate (unknown source), <anonymous>:2:6)↵    at Object.InjectedScript._evaluateOn (<anonymous>:732:103)↵    at Object.InjectedScript._evaluateAndWrap (<anonymous>:665:34)↵    at Object.InjectedScript.evaluateOnCallFrame (<anonymous>:783:21)↵    at Object.window.MARC.addTerminalPage.showTerminalsMain (http://localhost:9090/member/createCompany/addTerminal:792:50)↵    at Object.renderTerminalsOnMap [as success] (http://localhost:9090/member/createCompany/addTerminal:1144:37)↵    at p.Callbacks.k (http://localhost:9090/resources/js/jquery-1.8.2.min.js:2:16920)↵    at Object.p.Callbacks.l.fireWith [as resolveWith] (http://localhost:9090/resources/js/jquery-1.8.2.min.js:2:17707)"

【问题讨论】：

什么是VM141？ 'place' 是您在代码中使用的某个变量吗？

标签： javascript templates exception underscore.js

【解决方案1】：

模板包含{{ place }} 片段。

_.extend(this.terminals[i], {clazz: 'all'}, obj)

应该包含place 字段。

【讨论】：