lastname意思是：姓。

lastname

英 [l?stnem] 美 [l?stnem]

n.姓

1、This method simply returns the firstName and lastName fields, concatenated with a space in between.

這個方法只返回firstName和lastName字段，中間使用一個空格連接。

2、Its child nodes look for rows that exactly match ( eq) the firstName and the lastName attributes.

它的子節(jié)點查找那些精確匹配（eq，等于）firstName和lastName屬性的行。

3、If we include LASTNAME and SALARY in the index as well, we never need to access the EMP table because all the data we need exists in the index.

如果我們在索引中還包含了LASTNAME和SALARY，我們就不再需要訪問EMP表，因為我們需要的所有數(shù)據(jù)都已經(jīng)在索引中。

4、In this case, the function retrieves the firstName and lastName properties and puts them into an array-like structure that is then turned into a string using the join function.

在本例中，函數(shù)檢索firstName和lastName屬性，并將它們放入一個類似數(shù)組的結(jié)構(gòu)中，然后使用連接函數(shù)將它們轉(zhuǎn)換成一個字符串。

5、The details for the second extract show that the part of the name string up to the first comma gets copied to the lastName attribute of the Person object.

第二個提取的詳細信息表明，截止第一個逗號的姓名字符串部分被復(fù)制到了Person對象的lastName屬性中。