If an event contains an attribute that is not described in the meta data, RFIDIC still captures this event, but considers this attribute a surprise attribute.
The content attribute of the META element is flexible in that it accepts values other than the ones described previously.
内容属性值在接收到异于先前叙述的数值时是具有弹性的。
3
To set a specific scale, the content attribute of the viewport metatag is set to an explicit value: <meta name="viewport" content="width=device-width, initial-scale=1.0 user-scalable=yes" />.