Add apply-parent-classes feature to class-tools
#2485
Closed
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This PR adds a very useful feature.
It reads any
apply-parent-classes
ordata-apply-parent-classes
nodes, and then applies the class changes to its parent. The nodes are removed afterwards and not left in the target; therefore they are transitional and only act as containers to the class modification commands.This can be used to surgically add/remove classes in any DOM element via OOB updates..
For example, the following will add the
foo
class to#my-element
after 1 second, then remove thefoo
class one second later, vanishing without a trace afterwards. The net effect is direct OOB control by the server of client-side CSS classes.This is a way to non-intrusively affect the CSS classes of an element without knowing its content.