Javascript方法命名小写与大写 [英] Javascript Method Naming lowercase vs uppercase

问题描述

我主要是ASP.NET和C＃的开发人员。我将变量命名为小写，我的方法以大写开头。但我研究的大多数javascript示例都有以小写字母开头的函数。为什么会这么重要？

I am for the most part a developer in ASP.NET and C#. I name my variables starting in lowercase and my methods starting in uppercase. but most javascript examples I study have functions starting in lowercase. Why is this and does it matter?

function someMethod() { alert('foo'); }

vs

function SomeMethod() { alert('bar'); }

推荐答案

Javascript中的一个流行约定是大写构造函数（通常也被误称为类）。

A popular convention in Javascript is to only capitalize constructors (also often mistakenly called "classes").

function Person(name) {
  this.name = name;
}
var person = new Person('John');

这个惯例很受欢迎，Crockford甚至把它包含在 JSLint 在可选项下 - 要求构造函数的初始上限：）

This convention is so popular that Crockford even included it in its JSLint under an optional — "Require Initial Caps for constructors" : )

任何不是构造函数通常以小写开头，并且 camelCased 。这种风格有些原生于Javascript; ECMAScript，例如（ECMA-262，第3版和第5版） - JavaScript和其他实现符合 - 完全遵循这个约定，在camelcase中命名内置方法 - Date.prototype.getFullYear ， Object.prototype.hasOwnProperty ， String.prototype.charCodeAt 等。

Anything that's not a constructor usually starts with lowercase and is camelCased. This style is somewhat native to Javascript; ECMAScript, for example (ECMA-262, 3rd and 5th editions) — which JavaScript and other implementations conform to — follows exactly this convention, naming built-in methods in camelcase — Date.prototype.getFullYear, Object.prototype.hasOwnProperty, String.prototype.charCodeAt, etc.

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