HTML attributes provide additional information about HTML elements.
All HTML elements can have attributes
Attributes provide additional information about elements
Attributes are always specified in the start tag
Attributes usually come in name/value pairs like: name="value"
The href Attribute
The src Attribute
The tag is used to embed an image in an HTML page. The src attribute specifies the path to the image to be displayed:
The width and height Attributes
The tag should also contain the width and height attributes, which specifies the width and height of the image (in pixels):
example.jpg" width="500" height="600">
The alt Attribute
The required alt attribute for the tag specifies an alternate text for an image, if the image for some reason cannot be displayed. This can be due to slow connection, or an error in the src attribute, or if the user uses a screen reader.
The style Attribute
The style attribute is used to add styles to an element, such as color, font, size, and more.
This is a red paragraph.
The lang Attribute
You should always include the lang attribute inside the tag, to declare the language of the Web page. This is meant to assist search engines and browsers.
The following example specifies English as the language:
Country codes can also be added to the language code in the lang attribute. So, the first two characters define the language of the HTML page, and the last two characters define the country.
The following example specifies English as the language and United States as the country:
The title Attribute
The title attribute defines some extra information about an element.
The value of the title attribute will be displayed as a tooltip when you mouse over the element:
This is a paragraph.
We Suggest: Always Use Lowercase Attributes
The HTML standard does not require lowercase attribute names.
The title attribute (and all other attributes) can be written with uppercase or lowercase like title or TITLE.
However, Esenceweb recommends lowercase attributes in HTML, and demands lowercase attributes for stricter document types like XHTML.
We Suggest: Always Quote Attribute Values
The HTML standard does not require quotes around attribute values.
However, Esenceweb recommends quotes in HTML, and demands quotes for stricter document types like XHTML.
Sometimes you have to use quotes. This example will not display the title attribute correctly, because it contains a space
You cannot omit quotes around an attribute value
if the value contains spaces.
At ESENCEWEB we always use quotes around attribute values.
Single or Double Quotes?
Double quotes around attribute values are the most common in HTML, but single quotes can also be used.
In some situations, when the attribute value itself contains double quotes, it is necessary to use single quotes: