required attribute
常見(jiàn)例句
- Many attributes have default values, but only the required attribute must be assigned a value.
許多屬性具有缺省值,但只有必需屬性必須分配值。 - When you use this form of the c:forEach> tag, the items attribute is the only required attribute.
當(dāng)使用這種形式的 c:forEach> 標(biāo)記時(shí), items 屬性是唯一必需的屬性。 - Unlike the REQUIRED attribute, the MANDATORY attribute will not start a transaction if one does not exist, but rather will throw an exception indicating that a transaction is required.
與 REQUIRED 屬性不同,MANDATORY 屬性將不會(huì) 開始不存在的事務(wù),而是拋出一個(gè)異常,指示需要事務(wù)。 返回 required attribute