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(gè)方法只返回firstName和lastName字段，中間使用一個(gè)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(diǎn)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?yàn)槲覀冃枰乃袛?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(gè)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(gè)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(gè)提取的詳細(xì)信息表明，截止第一個(gè)逗號的姓名字符串部分被復(fù)制到了Person對象的lastName屬性中。