函数、变量命名规则(源自MDN)

最新推荐文章于 2023-11-18 15:56:29 发布

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本文详细介绍了JavaScript中变量命名的最佳实践，包括使用拉丁字符、避免下划线和数字开头、采用驼峰命名法以及区分大小写的重要性。同时，文章强调了避免使用保留字作为变量名的必要性。

age
myAge
init
initialColor
finalOutputValue
audio1
audio2

1
a
_12
myage
MYAGE
var
Document
skjfndskjfnbdskjfb
thisisareallylongstupidvariablenameman

Generally, you should stick to just using Latin characters (0-9, a-z, A-Z) and the underscore character.

Don’t use underscores at the start of variable names — this is used in certain JavaScript constructs to mean specific things, so may get confusing. 别以下划线开头
Don’t use numbers at the start of variables. This isn’t allowed and will cause an error. 别以数字开头
Using lower case for the whole first word and then capitalize subsequent words. We’ve been using this for our variable names in the article so far. 先小写再大写
Variables are case sensitive — so myage is a different variable to myAge. JS对大小写敏感
Avoid using JavaScript reserved words as your variable names. 别用JS关键字