<em>: The Emphasis element
The <em>
HTML element marks text that has stress emphasis. The <em>
element can be nested, with each level of nesting indicating a greater degree of emphasis.
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Attributes
This element only includes the global attributes.
Usage notes
The <em>
element is for words that have a stressed emphasis compared to surrounding text, which is often limited to a word or words of a sentence and affects the meaning of the sentence itself.
Typically this element is displayed in italic type. However, it should not be used to apply italic styling; use the CSS font-style
property for that purpose. Use the <cite>
element to mark the title of a work (book, play, song, etc.). Use the <i>
element to mark text that is in an alternate tone or mood, which covers many common situations for italics such as scientific names or words in other languages. Use the <strong>
element to mark text that has greater importance than surrounding text.
<i> vs. <em>
Some developers may be confused by how multiple elements seemingly produce similar visual results. <em>
and <i>
are a common example, since they both italicize text. What's the difference? Which should you use?
By default, the visual result is the same. However, the semantic meaning is different. The <em>
element represents stress emphasis of its contents, while the <i>
element represents text that is set off from the normal prose, such as a foreign word, fictional character thoughts, or when the text refers to the definition of a word instead of representing its semantic meaning. (The title of a work, such as the name of a book or movie, should use <cite>
.)
This means the right one to use depends on the situation. Neither is for purely decorative purposes, that's what CSS styling is for.
An example for <em>
could be: "Just do it already!", or: "We had to do something about it". A person or software reading the text would pronounce the words in italics with an emphasis, using verbal stress.
An example for <i>
could be: "The Queen Mary sailed last night". Here, there is no added emphasis or importance on the word "Queen Mary". It is merely indicated that the object in question is not a queen named Mary, but a ship named Queen Mary. Another example for <i>
could be: "The word the is an article".
Examples
The <em>
element is often used to indicate an implicit or explicit contrast.
html
<p>
In HTML 5, what was previously called
<em>block-level</em> content is now called <em>flow</em> content.
</p>
Result
Technical summary
Content categories | Flow content, phrasing content, palpable content. |
---|---|
Permitted content | Phrasing content. |
Tag omission | None, both the starting and ending tag are mandatory. |
Permitted parents | Any element that accepts phrasing content. |
Implicit ARIA role | No corresponding role |
Permitted ARIA roles | Any |
DOM interface |
HTMLElement Up to Gecko 1.9.2 (Firefox 4)
inclusive, Firefox implements the
HTMLSpanElement interface for this element.
|
Specifications
Specification |
---|
HTML Standard # the-em-element |
Browser compatibility
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