实例变量无法从方法访问

Question

我是CoffeeScript的新手，但我编写了一个带有构造函数的类，该构造函数为此分配属性。在我的函数中，这些属性没有定义。有人有想法吗？

class ProcessVisualisation
  constructer: (width, devMode = false) ->
    @objProcess = null
    @config =
      devMode: false

  loadProcess: (processPath) ->
    console.log("loadProcess") if (@config.devMode)  # <- config is not defined
    that = @;
    that.processPath = processPath
    $.getJSON @processPath, {}, (response) ->
      that.onProcessLoaded response

pv = new ProcessVisualisation(1023, true)

pv.loadProcess "data/process.json"

Answer 1

如评论中所述，修复constructer和功能箭头。

class ProcessVisualisation
  constructor: (width, devMode = false) ->
    @objProcess = null
    @config =
      devMode: false

  loadProcess: (processPath) =>
    console.log("loadProcess") if (@config.devMode)
    @processPath = processPath
    $.getJSON @processPath, {}, (response) =>
      @onProcessLoaded response

pv = new ProcessVisualisation(1023, true)

pv.loadProcess "data/process.json"