how to add a add collect button on dawn themo

[thomas_tu]

 I am now going to add a heart and add to collect button under the product page "Buy Now" in SHOPIFIY, I want to add to collection when the customer does not click add to collection, the heart is empty (red), this customer clicks add to collection, love is solid (red) please help write a customer liquid to implement this function

[swym]

Hello Thomas_tu, 

I understand you want to add a wishlist button to your Shopify store's product page.

Adding a wishlist feature can enhance the shopping experience for your customers, allowing them to save products they're interested in for future reference.

To implement a wishlist button, you can consider using apps that provide Wishlist feature. 

You can explore wishlist apps available on the Shopify App Store by searching for "wishlist" in the app store, using the link: https://apps.shopify.com/search?q=wishlist. I represent the Wishlist Plus team of Swym 😀. 
I encourage you to explore other options as well to find the best fit for your store.

Hope this helps!

Best regards,

Abhishek from Swym