insertRule
(method
)
Owning interface and usage:
CSSMediaRule.
insertRule(
rule,
index)
Member of these other interfaces:
none
Description:
Used to insert a new rule into the media block.
Parameters:
| DOMString rule |
- |
The parsable text representing the rule. For rule sets this contains both the selector and the style declaration. For at-rules,
this specifies both the at-identifier and the rule content.
|
| unsigned index |
- |
The index within the media block's rule collection of the rule before which to insert the specified rule. If the specified
index is equal to the length of the media blocks's rule collection, the rule will be added to the end of the media block.
|
Returns:
unsigned long -
The index within the media block's rule collection of the newly inserted rule.
Exceptions:
- DOMException HIERARCHY_REQUEST_ERR
-
Raised if the rule cannot be inserted at the specified index, e.g., if an @import rule is inserted after a standard rule set or other at-rule.
- DOMException INDEX_SIZE_ERR
-
Raised if the specified index is not a valid insertion point.
- DOMException NO_MODIFICATION_ALLOWED_ERR
-
Raised if this media rule is readonly.
- DOMException SYNTAX_ERR
-
Raised if the specified rule has a syntax error and is unparsable.