# ConstantProperty

#### new Cesium.ConstantProperty(value)
engine/Source/DataSources/ConstantProperty.js 14

A `Property` whose value does not change with respect to simulation time.

Name | Type | Description
--- | --- | ---
`value` | * | optional The property value.

##### See:

- ConstantPositionProperty

### Members

#### readonly definitionChanged : Event
engine/Source/DataSources/ConstantProperty.js 43

Gets the event that is raised whenever the definition of this property changes. The definition is changed whenever setValue is called with data different than the current value.

#### readonly isConstant : boolean
engine/Source/DataSources/ConstantProperty.js 31

Gets a value indicating if this property is constant. This property always returns `true`.

### Methods

#### equals(other) → boolean
engine/Source/DataSources/ConstantProperty.js 90

Compares this property to the provided property and returns `true` if they are equal, `false` otherwise.

Name | Type | Description
--- | --- | ---
`other` | Property | optional The other property.

##### Returns:

`true` if left and right are equal, `false` otherwise.

#### getValue(time, result) → object
engine/Source/DataSources/ConstantProperty.js 57

Gets the value of the property.

Name | Type | Description
--- | --- | ---
`time` | JulianDate | optional The time for which to retrieve the value. This parameter is unused since the value does not change with respect to time.
`result` | object | optional The object to store the value into, if omitted, a new instance is created and returned.

##### Returns:

The modified result parameter or a new instance if the result parameter was not supplied.

#### setValue(value)
engine/Source/DataSources/ConstantProperty.js 66

Sets the value of the property.

Name | Type | Description
--- | --- | ---
`value` | * | The property value.

#### toString() → string
engine/Source/DataSources/ConstantProperty.js 113

Creates a string representing this property's value.

##### Returns:

A string representing the property's value.

#### valueOf() → *
engine/Source/DataSources/ConstantProperty.js 104

Gets this property's value.

##### Returns:

This property's value.

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