Operators (Webmaster in a Nutshell, 3rd Edition)

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16.7. Operators

Expressions are combined and manipulated using operators. The following table lists the operators from highest to lowest precedence; the second column (A) shows the operators' associativity. These operators should be familiar to you if you have any C, Java, or Perl experience.

Operators	Associativity
`!`, `~`, `++`, `--`, `@`, (the casting operators)	Right
`*`, `/`, `%`	Left
`+`, `-`, .	Left
`<<`, `>>`	Left
`<`, `<=`, `>=`, `>`	Nonassociative
`==`, `!=`, `===`, `!==`	Nonassociative
`&`	Left
`^`	Left
`\|`	Left
`&&`	Left
`\|\|`	Left
`?` : (conditional operator)	Left
`=`, `+=`, `-=`, `*=`, `/=`, `%=`, `^=`, `.=`, `&=`, `\|=`, `<<=`, `>>=`	Left
`AND`	Left
`XOR`	Left
`OR`	Left

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