Keywords

Keywords are reserved words in the syntax that have special meaning. Keywords are used to define the structure of the query and to specify the elements that should be selected. Keywords are not case sensitive.

Keywords may be used in string literals, but they are not treated as keywords in that context. For example, LINK is a keyword, but 'LINK' is a string literal that may be used in attribute selectors.

• Priority
  • Combinators
• Statement Keywords
• Element Keywords
• Pseudo Selector Keywords

Priority

CSS Selectors are written in a specific order. For example, element selectors are written before attribute or pseudo selectors. Aside from combinators, you don't have to worry about maintaining this order in your Jelly SQL. The parser will automatically sort the selectors in the correct order.

Parser Order (Highest to Lowest)

1. TAG || ELEMENT
2. ID
3. CLASS
4. ATTRIBUTE || ATTR

note

Any not mentioned, will be sorted based on the defined order in your Jelly SQL query.

Combinators

CSS combinator selectors are evaluated from right to left. In Jelly SQL, the order is defined by the language itself.

Here's an example of a combinator in CSS:

SQL

SELECT * FROM DOM WHERE
TAG('p') CHILD OF TAG('div')

CSS

div > p {
  /* Styles */
}

Statement Keywords

Statement keywords are used to define the structure of the query. They are used to specify the type of operation that should be performed on the elements.

Keyword	Introduced
SELECT	1.0.0
FROM	1.0.0
WHERE	1.0.0
AS	1.0.0

Element Keywords

Element keywords are used to specify the elements or attribute type that should be targeted by the query.

Keyword	Introduced
TAG	1.0.0
ELEMENT	1.0.0
ID	1.0.0
CLASS	1.0.0
ATTRIBUTE	1.0.0
ATTR	1.0.0
STYLE	1.0.0

Pseudo Selector Keywords

Pseudo selector keywords are used to specify the type of element that should be selected based on its position or state.

Keyword	Type	Introduced
FIRST	Structural	1.0.0
LAST	Structural	1.0.0
ODD	Structural	1.0.0
EVEN	Structural	1.0.0
ONLY	Structural	1.0.0
EMPTY	Structural	1.0.0
ROOT	Structural	1.0.0
LINK	Link	1.0.0
VISITED	Link	1.0.0
ACTIVE	User Action	1.0.0
HOVER	User Action	1.0.0
FOCUS	User Action	1.0.0
ENABLED	UI Element	1.0.0
DISABLED	UI Element	1.0.0
CHECKED	UI Element	1.0.0
FIRSTLINE	Misc	1.0.0
FIRSTLETTER	Misc	1.0.0
TARGET	Misc	1.0.0
BEFORE	Misc	1.0.0
AFTER	Misc	1.0.0