What It Is
What It Does
* Missing semicolons at the end of a line.
* Curly braces without an if, for, while, etc.
* Code that is never run because of a return, throw, continue, or break.
* Case statements in a switch that do not have a break statement.
* Leading and trailing decimal points on a number.
* A leading zero that turns a number into octal (base 8).
* Comments within comments.
* Ambiguity whether two adjacent lines are part of the same statement.
* Statements that don't do anything.
* Regular expressions that are not preceded by a left parenthesis, assignment, colon, or comma.
* Statements that are separated by commas instead of semicolons.
* Use of increment (++) and decrement (--) except for simple statements such as "i++;" or "--i;".
* Use of the void type.
* Successive plus (e.g. x+++y) or minus (e.g. x---y) signs.
* Use of labeled for and while loops.
* if, for, while, etc. without curly braces. (This check is disabled by default.)