The setFloatValue() method of the CSSPrimitiveValue interface is used to set a float value. If the property attached to this value can't accept the specified unit or the float value, the value will be unchanged and a DOMException will be raised.


cssPrimitiveValue.setFloatValue(unitType, floatValue);


An unsigned short representing the code for the unit type, in which the value should be returned. Valid values are:
Constant Description
CSS_CM The value is a <length> in centimeters.
CSS_DEG The value is an <angle> in degrees.
CSS_DIMENSION The value is a <number> with an unknown dimension.
CSS_EMS The value is a <length> in em units.
CSS_EXS The value is a <length> in ex units.
CSS_GRAD The value is an <angle> in grads.
CSS_HZ The value is a <frequency> in Hertz. The value can be obtained by using the getFloatValue method.
CSS_IN The value is a <length> in inches.
CSS_KHZ The value is a <frequency> in Kilohertz.
CSS_MM The value is a <length> in millimeters.
CSS_MS The value is a <time> in milliseconds.
CSS_NUMBER The value is a simple <number>.
CSS_PC The value is a <length> in picas.
CSS_PERCENTAGE The value is a <percentage>.
CSS_PT The value is a <length> in points.
CSS_PX The value is a <length> in pixels.
CSS_RAD The value is an <angle> in radians.
CSS_S The value is a <time> in seconds.
A float representing the new float value.

Return value



Type Description
DOMException An INVALID_ACCESS_ERR is raised if the CSS value doesn't contain a float value or if the string value can't be converted into the specified unit.
An NO_MODIFICATION_ALLOWED_ERR is raised if this property is read-only.


Specification Status Comment
Document Object Model (DOM) Level 2 Style Specification
The definition of 'CSSPrimitiveValue.setFloatValue' in that specification.
Obsolete Initial definition

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support No ? Yes ? No ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support ? ? ? Yes ? ? ?

Document Tags and Contributors

Contributors to this page: fscholz, Sebastianz
Last updated by: fscholz,