The break statement terminates the current loop, switch, or label statement and transfers program control to the statement following the terminated statement.
The continue statement terminates execution of the statements in the current iteration of the current or labeled loop, and continues execution of the loop with the next iteration.
The debugger statement invokes any available debugging functionality, such as setting a breakpoint. If no debugging functionality is available, this statement has no effect.
The do...while statement creates a loop that executes a specified statement until the test condition evaluates to false. The condition is evaluated after executing the statement, resulting in the specified statement executing at least once.
An empty statement is used to provide no statement, although the JavaScript syntax would expect one.
The for...in statement iterates over the enumerable properties of an object, in arbitrary order. For each distinct property, statements can be executed.
The function declaration defines a function with the specified parameters.
The if statement executes a statement if a specified condition is true. If the condition is false, another statement can be executed.
The labeled statement can be used with break or continue statements. It is prefixing a statement with an identifier which you can refer to.
The return statement ends function execution and specifies a value to be returned to the function caller.
The throw statement throws a user-defined exception. Execution of the current function will stop (the statements after throw won't be executed), and control will be passed to the first catch block in the call stack. If no catch block exists among caller functions, the program will terminate.
The try...catch statement marks a block of statements to try, and specifies a response, should an exception be thrown.
var
The variable statement declares a variable, optionally initializing it to a value.
The while statement creates a loop that executes a specified statement as long as the test condition evaluates to true. The condition is evaluated before executing the statement.
A block statement (or compound statement in other languages) is used to group zero or more statements. The block is delimited by a pair of curly brackets.
The export statement is used to export functions, objects or primitives from a given file (or module).
for
The for statement creates a loop that consists of three optional expressions, enclosed in parentheses and separated by semicolons, followed by a statement (usually a block statement) to be executed in the loop.
The for...of statement creates a loop iterating over iterable objects (including Array, Map, Set, String, TypedArray, arguments object and so on), invoking a custom iteration hook with statements to be executed for the value of each distinct property.
The import statement is used to import functions, objects or primitives that have been exported from an external module, another script, etc.
The switch statement evaluates an expression, matching the expression's value to a case clause, and executes statements associated with that case.