Literal attribute values can use several different styles of quoting:

• Single quotes (eg attr='value')
• Double quotes (eg attr="value")
• Tripe double quotes (eg attr="""value""")
• No quoting is necessary for values that do not contain spaces (eg attr=value)

Literal attribute values can include line breaks. For example:

<div data-address="Mouse House,
Mouse Lane,
Rodentville,
Ratland."/>

By using triple-double quotes you can specify attribute values that contain single double quotes. For example:

<div data-address="""Mouse House,
"Mouse" Lane,
Rodentville,
Ratland."""/>