DOMStringMap

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

Method overview

DOMString getDataAttr(in DOMString prop); Native code only!

boolean hasDataAttr(in DOMString prop); Violates the XPCOM interface guidelines

void removeDataAttr(in DOMString prop); Violates the XPCOM interface guidelines

void removeProp(in nsIAtom attr); Violates the XPCOM interface guidelines

void setDataAttr(in DOMString prop, in DOMString value); Native code only!

Methods

DOMString getDataAttr(
  in DOMString prop
);

Parameters

prop

The property for which to retrieve the value.

Return value

The value for the specified property name.

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.

void removeDataAttr(
  in DOMString prop
);

Parameters

prop

The property to remove from the data set.

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.

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 compatibility

See also

• HTMLElement.dataset
• dataset