How to change quantity button on cart theme like vampire update

Topic summary

A developer is seeking help modifying the quantity button functionality on the cart page of a Shopify store using the Vampire theme.

Current Issue:

  • Attempted to change the quantity button behavior using JavaScript but was unsuccessful
  • The cart page currently has a specific quantity selector design

Desired Outcome:

  • Wants to implement a different quantity button style/functionality (referenced via images)

Status:

  • The request remains unanswered with no solutions provided yet
  • Images were shared showing both the current implementation and the desired design, though they appear corrupted or improperly formatted in the post
Summarized with AI on November 22. AI used: claude-sonnet-4-5-20250929.

hello devs, currently i am using vampire theme for my store and i am trying to get change in quantity button in cart page but did not success in js . please help

current page

desire output:

Site : thefaceshop

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