DOMStringMap

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

方法预览

DOMString getDataAttr(in DOMString prop);

boolean hasDataAttr(in DOMString prop);

void removeDataAttr(in DOMString prop);

void removeProp(in nsIAtom attr);

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

方法

hasDataAttr()

boolean hasDataAttr(
  in DOMString prop
);

参数

prop: 属性名

返回值

如果该属性存在则返回 true，否则返回 false

removeDataAttr()

void removeDataAttr(
  in DOMString prop
);

参数

prop: 属性名

removeProp()

移除属性，当移除的是 data-* 属性时更新整个数据集

void removeProp(
  in nsIAtom attr
);

参数

attr: 属性名

浏览器兼容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Desktop
Mobile

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	?	6.0 (6.0)	?	?	?

Feature	Android	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	?	?	?	?	?

参见

最后修改：

May 2, 2019, by MDN contributors