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新手上路

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Usage of Enumerations (Numbers): Some attributes can only take a few values. Programmers often call such attributes enumeration . For example, a store that makes sales uses the Offer element to provide status information about the product it is selling. In this case, the availability attribute can only take one of the following options: in stock, out of stock, Pre-order.
Due to the structure of Schema.org , such attributes can also be ex Mexico Phone Numbers 90 Million List pres sed using URL. Below is an example of a product for sale marked with the Offer type. .div itemscope :schema.orgOffer .span itempropnameBlend-O-Matic.span .span itempropprice. span .span itempropavailabilityAvailable today!.

span .div specified using link and href elements. .div itemscope :schema.orgOffer .span itempropnameBlend-O-Matic.span .span itempropprice. span .link itempropavailability :schema.orgInStockAvailable today! .div schema.org provides enumeration values for many properties. Use of reference information: Links are often specified using the element.
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