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If you would like to prevent a select box from being changed if not confirmed by user. So here the case is before changing select option , user will be get a message as javascript confirmation to make sure user is
Somehow if you are trying to add product attribute as column to category products section then follow the code with explanation I am sure you can be able to get your exact requirement.Suppose you have a product attribute called “type”
To day I am going to show you All list of events and observer in magento-1911.For cheat sheet of events and observer of magento-17 then see this link Cheat sheet of events and observer in magento 17 else if you
To day I am going to show you All list of events and observer in magento-1810.For cheat sheet of events and observer of magento-17 then see this link Cheat sheet of events and observer of magento-17 else if you want
Generally magento dispatch some of events at a particular location and that event generally catches by an observer.I mean If any event dispatched an observer will watch that event.So event can be dispatched in magento Mage::dispatchEvent(‘event_name’,’data_array’); like Mage::dispatchEvent(‘event_name’,array(‘data’,’data_value’)); and any event