Detailed explanation of JavaScript variable naming rules you must know_Basic knowledge

Variable naming should also comply with one of the following famous naming rules:

Famous variable naming rules
Camel notation
The first letter is lowercase, and the following letters all start with uppercase characters. For example:

Copy code The code is as follows:

var testValue = 0, secondValue = "hi" ;Pascal notation

starts with an uppercase letter, and all subsequent letters begin with an uppercase character. For example:

Copy code The code is as follows:

var TestValue = 0, SecondValue = "hi" ; Hungarian type notation

Appends a lowercase letter (or sequence of lowercase letters) before a variable named in Pascal notation to indicate the type of the variable. For example, i represents an integer and s represents a string, as shown below "

Copy the code The code is as follows:

var iTestValue = 0, sSecondValue = "hi";

The following table lists some commonly used prefixes to make the sample code easier to read:

类型	前缀	示例
数组	a	aValues
布尔型	b	bFound
浮点型（数字）	f	fValue
函数	fn	fnMethod
整型（数字）	i	iValue
对象	o	oType
正则表达式	re	rePattern
字符串	s	sValue
变型（可以是任何类型）	v	vValue