Introduction to <rp>tag

The <rp>tag in HTML, short for "Ruby Parenthesis," is a lesser-known but useful element designed to enhance the readability of ruby annotations in web content. Ruby annotations are small texts positioned above or beside a base text to provide pronunciation or meaning, commonly used in East Asian languages like Japanese and Chinese. The <rp>tag is specifically used to enclose fallback parenthesis characters that appear when a browser does not support the ruby annotation markup.

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<!-- Ruby, Rt, Rp Example -->
<ruby class="custom-ruby">漢字
<rp>(</rp>
<rt>Kanji</rt>
<rp>)</rp>
</ruby>
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/* CSS for Ruby, Rt, Rp */
    .custom-ruby {
        font-size: 1.1rem;
    }
    
    .custom-ruby rt {
        font-size: 0.8rem;
        color: #555;
}

Global Attributes

AttributesDescription
accesskeySpecifies a shortcut key to activate or focus an element.
autocapitalizeControls whether and how text input is automatically capitalized.
classSpecifies one or more class names for the element, allowing CSS styling and JavaScript manipulation.
contenteditableSpecifies whether the content of an element is editable or not.
contextmenuSpecifies a context menu for the element.
dirDefines the text direction. Possible values are "ltr" (left-to-right), "rtl" (right-to-left), and "auto".
draggableSpecifies whether an element is draggable. Possible values are "true" or "false".
enterkeyhintSpecifies the action label or icon to be shown for the enter key on virtual keyboards.
hiddenIndicates that the element is not yet, or is no longer, relevant. The browser does not display elements that have the `hidden` attribute set.
idSpecifies a unique identifier for the element.
inputmodeProvides a hint to browsers for which virtual keyboard configuration to use when editing this element or its descendants.
isAllows you to specify the type of custom element.
langSpecifies the language of the element's content.
nonceA cryptographic nonce ("number used once") that can be used by Content Security Policy (CSP) to determine whether or not a given fetch will be allowed to proceed.
partSpecifies the element’s part in the shadow DOM.
slotAssigns a slot in a shadow DOM shadow tree.
spellcheckIndicates whether the element is subject to spell checking.
styleProvides inline CSS styling for the element.
tabindexSpecifies the tab order of the element.
titleAdds extra information about the element, displayed as a tooltip when hovering over the element.
translateSpecifies whether the content of the element should be translated. Possible values are "yes" or "no".
HTML AttributesGlobal AttributesEvent Attributes
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<rp>5.05.538.05.015.0