alterAttribute static method
Alters a specific attribute
of a HTML Element, node
by applying function alter
to the attribute
.
node
- any HTML Element.attribute
- the name of the attribute to be modifiied.alter
- a function that takes in- the old value
- and returns the new value.
The following example uses alterAttribute
to modify an attribute on an Element.
Specifically it is altering the href attribute on a anchor element
go to google
the function removeUrlRedirect
would be a declared to pass in a href String
and return a modified href string
alterAttribute(element, 'href', (url) => removeUrlRedirect(url)));
Implementation
static alterAttribute(
Element node, String attribute, Object? alter(Object? a)) {
log.info('Function : alterAttribute, '
'Parameters : {[node,$node][attribute,$attribute][alter,$alter]}');
assert(alter is _MyHtml_Alter_Element);
if (node.attributes.containsKey(attribute)) {
log.finer(
'Function : alterAttribute, old : ${node.attributes[attribute]}');
node.attributes[attribute] = alter(node.attributes[attribute]) as String;
log.finer(
'Function : alterAttribute, new : ${node.attributes[attribute]}');
}
log.fine('Function : alterAttribute, Return : void');
}