How to show the icon as selected (may be color change) when user add a product to wishlist ?

[sekhar_n]

For wishlisted products and Non-wishlisted products it is showing same

[surbhiiagr]

Hello @sekhar_n ,

You have to create a custom controller to provide wishlist data of current user. Using ajax call you can get the data from this controller to your phtml file.

Please refer to below link for more clarification  

https://magento.stackexchange.com/questions/251800/show-wishlist-icon-as-selected-when-clicked