XPath
ina cikin kashi na XPath tukwumi, ina iya kuma hana kaiyawa, kuma tukwumi na logical da kuma burin burin.
XPath
duba shafin kuma farko na mu'amari da za a yi amfani da shi a ina cikin kashi na XPath tukwumi:
mu'amari | ba'a | shafi | haya |
---|---|---|---|
| | kawu kaiyawa biyu | //book | //cd | haya kaiyawa dake da kuma book da cd |
+ | kawu | 6 + 4 | 10 |
- | kawu | 6 - 4 | 2 |
* | kawu | 6 * 4 | 24 |
div | kika | 8 div 4 | 2 |
= | kaiyawa | price=9.80 |
如果 price 是 9.80,则返回 true。 ifi price 9.90, hana false. |
!= | kaiyawa | price!=9.80 |
ifi price 9.90, hana true. ifi price 9.80, hana false. |
< | kiciyawa | price<9.80 |
ifi price 9.00, hana true. ifi price 9.90, hana false. |
<= | kiciyawa ko kaiyawa | price<=9.80 |
ifi price 9.00, hana true. ifi price 9.90, hana false. |
> | kaiyawa | price>9.80 |
ifi price 9.90, hana true. ifi price 9.80, hana false. |
>= | kaiyawa ko kaiyawa | price>=9.80 |
ifi price 9.90, hana true. ifi price 9.70, hana false. |
tana | tana | price=9.80 tana 9.70 |
如果 price 是 9.80,则返回 true。 如果 price 是 9.50,则返回 false。 |
and | 与 | price>9.00 and price<9.90 |
如果 price 是 9.80,则返回 true。 如果 price 是 8.50,则返回 false。 |
mod | 计算除法的余数 | 5 mod 2 | 1 |