What is the HTML <u> tag ?
HTML <u> tag stands for underline, and it’s used to underline the text enclosed within the <u> tag.
HTML <u> tag represents a span of inline text which should be rendered in a way that indicates that it has a non-textual annotation.
HTML <u> tag text is rendered by default in a simple solid underline, but it may be altered using CSS properties.
HTML <u> tag requires a starting <u> as well as ending </u> tag.
How HTML <u> tag works ?
HTML <u> tag was originally used to identify text that should be underlined.
HTML <u> tag was deprecated in HTML 4.01, but in HTML5 it was redefined to represent text that should be displayed in a way that is an unarticulated but stylistically distinct from the surrounding text.
Whatever text is inside the <u> tag is displayed in underlined format (unless you style it otherwise).
It is mostly used to identify misspelled terms.
Note : Avoid using the <u> element where it could be confused for a hyperlink!
Note : HTML <u> element should not be used just to underline the text because it is a deprecated HTML tag. For this purpose, use the CSS text-decoration property set to “underline”.
Why is the HTML <u> tag used ?
HTML <u> tag is used to add semantic meaning and specifies a text, which is stylistically different from a normal text.
HTML <u> tag specifies words or spans of text that need to be represented differently such as misspelled words or proper nouns in East-Asian characters.
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Syntax :
<u> Contents... </u>
Example :
<html>
<head>
<title>Underline Tag</title>
</head>
<body>
<h1>Welcome to CSTechbook</h1>
<h2>u Tag</h2>
<p>CSTechbook is an online <u>computer programming tutorial website.</u></p>
</body>
</html>
Output :

Example :
<html>
<head>
<title>Underline Tag</title>
<style>
span {
text-decoration:underline;
}
</style>
</head>
<body>
<h1>Welcome to CSTechbook</h1>
<h2>u Tag</h2>
<p>CSTechbook is an online <u>computer programming tutorial website.</u></p>
<p>inside span</p>
<span>CSTechbook is an online computer programming tutorial website.</span>
</body>
</html>
Output :

<u> Tag Attributes
HTML <u>
tag does not support any specific attributes.
Global Attributes
HTML <u>
tag support following global attributes.
Sno | Attributes | Value | Description |
---|---|---|---|
1 | id | unique_name | Declared unique id for an element. |
2 | class | class_name | Declared one or more classnames for an element. |
3 | style | styles | CSS inline styles specify an element. |
4 | title | title | Specify extra details of element contain, this will display as a “tooltip” for an elements. |
Event Attributes
HTML <u>
tag support following event attributes.
Sno | Attributes | Value | Description |
---|---|---|---|
1 | onfocus | script | element gets focus on object when script tobe run. |
2 | onblur | script | element lose the focus on object when scrip tobe run. |
3 | onabort | script | element gets aborted on object when script tobe run. |
4 | onchange | script | element gets anytime change on object when script tobe run. |
5 | onbeforeunload | script | element gets unloaded on object when scrip tobe run. |
6 | onclick | script | clicked on object when script tobe run. |
7 | ondblclick | script | double click on object when script tobe run. |
8 | onkeydown | script | key is pressed when script tobe run. |
9 | onkeypress | script | key is pressed over element then released when script tobe run. |
10 | onkeyup | script | key is released over element when script tobe run. |
11 | onmousedown | script | mouse button was pressed over an element when script tobe run. |
12 | onmouseout | script | mouse pointer release over an element when script tobe run. |
13 | onmousemove | script | run mouse pointer moved when script tobe run. |
14 | onmouseover | script | run mouse pointer move over when script tobe run. |
15 | onmouseup | script | mouse button is released when script tobe run. |
16 | onreset | script | form has been reset when script tobe run. |
17 | onselect | script | Select some content when script tobe run. |
18 | onsubmit | script | form has been submitted when script tobe run. |
19 | onload | script | object has load when script tobe run. |
20 | onchange | script | allow to change the object when script tobe run. |
21 | onunload | script | unload to the browser window when script tobe run. |
22 | ondrag | script | element being dragged when script tobe run. |
23 | ondragend | script | element being stop dragged when script tobe run. |
24 | ondragenter | script | element being go target dragged when script tobe run. |
25 | ondragleave | script | element being leave to target dragged when script tobe run. |
26 | ondragover | script | element being over to target dragged when script tobe run. |
27 | ondragstart | script | element being start dragged when script tobe run. |
28 | ondrop | script | element being dropped when script tobe run. |
29 | onerror | script | element error occurs when script tobe run. |
30 | onmessage | script | element message display when script tobe run. |
31 | onerror | script | element error occurs when script tobe run. |
32 | onmousewheel | script | mouse wheel will be rotate when script tobe run. |
33 | onscroll | script | scrollbar is scroll when script tobe run. |
34 | onresize | script | element should be resize when script tobe run. |
35 | onselect | script | all element content selected when script tobe run. |
36 | onstorage | script | element should be store in target when script tobe run. |
Browser Compatibility
Sno | Browser | Support |
1 | Chrome | Yes |
2 | Firefox | Yes |
3 | Edge | Yes |
4 | Opera | Yes |
5 | Safari | Yes |
6 | Internet Explorer | Yes |