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Version: 3.28.0

Object.isSealed()

The Object.isSealed() method determines if an object is sealed.

Syntax​

Object.isSealed(obj)

Parameters​

  • obj
    • : The object which should be checked.

Return value​

A Boolean indicating whether or not the given object is sealed.

Description​

Returns true if the object is sealed, otherwise false. An object is sealed if it is not extensible and if all its properties are non-configurable and therefore not removable (but not necessarily non-writable).