<aura:attribute name="test" type="Boolean" default="false"/>
<aura:handler name="change" value="{!v.test}" action="{!c.doInit}"/>
on parentcomponent.set("v.test",'newvalue');
on helper of child<aura:attribute name="test" type="Boolean" default="false"/>
<aura:handler name="change" value="{!v.test}" action="{!c.doInit}"/>
on parentcomponent.set("v.test",'newvalue');
on helper of child
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