Empty statement

An empty statement is used to provide no statement, although the JavaScript syntax would expect one.

{{InteractiveExample("JavaScript Demo: Empty statement")}}

```js interactive-example const array = [1, 2, 3];

// Assign all array values to 0 for (let i = 0; i < array.length; array[i++] = 0 / empty statement /);

console.log(array); // Expected output: Array [0, 0, 0]

## Syntax

```js-nolint
;

Description#

The empty statement is a semicolon (;) indicating that no statement will be executed, even if JavaScript syntax requires one.

The opposite behavior, where you want multiple statements, but JavaScript only allows a single one, is possible using a block statement, which combines several statements into a single one.

Examples#

Empty loop body#

The empty statement is sometimes used with loop statements. See the following example with an empty loop body:

const arr = [1, 2, 3];

// Assign all array values to 0
for (let i = 0; i < arr.length; arr[i++] = 0) /* empty statement */ ;

console.log(arr);
// [0, 0, 0]

Unintentional usage#

It is a good idea to comment intentional use of the empty statement, as it is not really obvious to distinguish from a normal semicolon.

In the following example, the usage is probably not intentional:

js-nolint example-bad if (condition); // Caution, this "if" does nothing! killTheUniverse(); // So this always gets executed!!!

Specifications#

{{Specifications}}

Browser compatibility#

{{Compat}}

See also#

• Block statement