N-R > null |  |

null

null

Availability

Flash Player 5.

Usage

    null

Parameters

None.

Returns

Nothing.

Description

Keyword; a special value that can be assigned to variables, or returned by a function if no data was provided. You can use `null` to represent values that are missing or do not have a defined data type.

Example

In a numeric context, `null` evaluates to 0. Equality tests can be performed with `null`. In this statement, a binary tree node has no left child, so the field for its left child could be set to `null`.

    if (tree.left == null) {
    	tree.left = new TreeNode();
    }