DOMStringMap

Used by the dataset HTML attribute to represent data for custom attributes added to elements.

Method overview

Methods

Native code only!

getDataAttr

DOMString getDataAttr(
  in DOMString prop
);

Parameters

prop

The property for which to retrieve the value.

Return value

The value for the specified property name.

Violates the XPCOM interface guidelines

hasDataAttr()

boolean hasDataAttr(
  in DOMString prop
);

Parameters

prop

The property for which to check for the existence of a value.

Return value

true if the property exists; otherwise false.

Violates the XPCOM interface guidelines

removeDataAttr()

void removeDataAttr(
  in DOMString prop
);

Parameters

prop

The property to remove from the data set.

Violates the XPCOM interface guidelines

removeProp()

Removes the property from the dataset object. Used to update the dataset object when data-* attribute has been removed from the element.

void removeProp(
  in nsIAtom attr
);

Parameters

attr

The property to remove from the dataset.

Native code only!

setDataAttr

Sets the value of the specified property.

void setDataAttr(
  in DOMString prop,
  in DOMString value
);

Parameters

prop

The property whose value is to be set.

value

The property's new value.

Browser compatibilityUpdate compatibility data on GitHub

See also

• HTMLElement.dataset
• dataset