The usage of the keyword function is imperative in the upcoming examples:

My Backbone View:

module.exports = Backbone.View.extend({
  tagName: 'div',
  events: {
    'click #saveReportBtn': '_handleSaveReport',
    'click #saveQuery': '_handleSaveQuery',
    'keydown #queryToolbar': '_enter',
  },
  _enter( event ) {
    console.log('event target:', + event.target.name + ', ' + event.currentTarget.name); // eslint-disable-line no-console
  },
...

Some individuals have proposed using the following code instead:

  _enter: function ( event ) {
    console.log('event target:', + event.target.name + ', ' + event.currentTarget.name); // eslint-disable-line no-console
  },

However, it appears that it functions without the function keyword, despite my ESLint raising a complaint:

src/myfile.js
  100:11  warning  Missing function expression name  func-names

✖ 1 problem (0 errors, 1 warning)

Am I overlooking anything? Thank you

Answer №1

The way you have written it:

_enter( event ) {
    console.log('event target:', + event.target.name + ', ' + event.currentTarget.name); // eslint-disable-line no-console
  }

Is considered shorthand in ES2015 (ES6), which is why eslint is not flagging it. For more information, refer to https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Method_definitions

Specifically:

Note : The shorthand syntax uses named functions instead of anonymous functions (like …foo: function() {}…).

Try giving a name to your function assignment. (http://eslint.org/docs/rules/func-names)

 _enter: function _enter( event ) {
    console.log('event target:', + event.target.name + ', ' + event.currentTarget.name); // eslint-disable-line no-console
  }

Using named functions rather than anonymous ones can greatly assist in debugging and provide clearer stack traces.

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