how to create script tag that add custom button in cart page?

[rushikesh93]

hello,
I have created an app using Shopify App Template - PHP,

Shopify php+reactjs app, but now I'm confused to create a script tag,

I don't understand how to create a script tag using Shopify App Template - PHP Structure,

exactly I don't understand which file I need to create that effect on the cart page.

I have read the script tag documentation, but don't get an exact idea about it,

I don't understand how to create a script tag, using Routes, Controller, and Component,

that the structure of this php App.

curl -d '{"script_tag":{"event":"onload","src":"https://example.com/my_script.js"}}' \
-X POST "https://your-development-store.myshopify.com/admin/api/2023-04/script_tags.json" \
-H "X-Shopify-Access-Token: {access_token}" \
-H "Content-Type: application/json"

I used this code and run into the Postman, it's run but, but now where does the output display in the front end?

in "src":"https://example.com/my_script.js", in src, which exact url i need to add?

because I'm developing this app in my local host.

please help me on this to create script tag.

Thanks.

@OneCommerce @PageFly-Victor @GemPages @flareAI @Alok_Kasgar 

[rushikesh93]

Please help me with this, give me some explanation on this.
Thank You.