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Summary

The HTML <bdo> Element (or HTML bidirectional override element) is used to override the current directionality of text. It causes the directionality of the characters to be ignored in favor of the specified directionality.

Usage Context

Content categories Flow content, phrasing content, palpable content.
Permitted content Phrasing content.
Tag omission None, both the starting and ending tag are mandatory.
Permitted parent elements Any element that accepts phrasing content.
DOM interface HTMLElement Up to Gecko 1.9.2 (Firefox 4) inclusive, Firefox implements the HTMLSpanElement interface for this element.

Attributes

This element includes the global attributes.

dir
Text direction in this element. Possible values are:
  • ltr: Indicates that the text should go in a left-to-right direction.
  • rtl: Indicates that the text should go in a right-to-left direction.

Examples

<!-- Switch text direction -->
<p>This text will go left to right.</p>
<p><bdo dir="rtl">This text will go right to left.</bdo></p>

Result

This text will go left to right.

.tfel ot thgir og lliw txet sihT

Notes

The HTML 4 specification did not specify events for this element; they were added in XHTML. This is most likely an oversight.

Specifications

Specification Status Comment
WHATWG HTML Living Standard
The definition of '<bdo>' in that specification.
Living Standard  
HTML5
The definition of '<bdo>' in that specification.
Recommendation  
HTML 4.01 Specification
The definition of '<bdo>' in that specification.
Recommendation  

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support (Yes) (Yes) (Yes) (Yes) (Yes)
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support (Yes) ? ? ? (Yes)

Document Tags and Contributors

 Last updated by: Zambonifofex,