Attributes are simple name/value pairs associated with an element : Attribute « Introduction « XML Tutorial






You can't have more than one attribute with the same name on an element.
Order of attributes is not relevant.
They are attached to the start-tag, but not to the end-tag. 

<name nickname="007"> 
    <first>Bond</first> 
    <last>James</last> 
</name> 

Attributes must have values.
Those values must be in quotes. 
Either single quotes or double quotes are fine, but they have to match. 

<input checked='true'> or <input checked="true">








1.4.Attribute
1.4.1.Attributes are simple name/value pairs associated with an element
1.4.2.An attribute creates additional information without adding text to the element.