I've been trying to find questions, articles, or documentation covering this, but haven't been able to find what I need or haven't understood it yet.

I have a custom module that a colleague wrote (who has since left) that adds some functionality via an API endpoint that we consume in a different application.

I now need to add some javascript to the /customer/account/ page.

I've read this answer and understand that I need to put something like the below into a config file:

<?xml version="1.0"?>

<layout version="0.1.0">
         <reference name="head">
                <action method="addJs"><script>{my script}.js</script></action>

Where does {my script}.js need to live inside my module directory, and which config file do I need to put the above block (if it is correct) inside my etc directory?

The current module directory looks like this:

Add to cart directory


The namespace for my module is James and the module is called AddToCart (i.e app/code/James/AddToCart. Following the advice inside solution 2 by @xanka, I first created the customer_account_index.xml file at the following location app/code/James/AddToCart/view/frontend/layout/customer_account_index.xml with the following contents:

<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
        <script src="james_addtocart::postMessage.js"/>

I then created the script inside the app/code/James/AddToCart/view/frontend/web/js/postMessage.js file:


I then ran the following commands, unsure if necessary:

php bin/magento maintenance:enable
php bin/magento setup:upgrade
php -d memory_limit=2G bin/magento setup:di:compile
php -d memory_limit=8G -d max_execution_time=18000 bin/magento setup:static-content:deploy -f
php bin/magento maintenance:disable
php bin/magento cache:clean
php bin/magento cache:flush
redis-cli -p 6379 flushall

Everything ran successfully, however I cannot see 'test' in my dev console when I log in and visit /customer/account and when I view source, I cannot see that my script is included in the head. Where have I gone wrong?


1 Answer 1


Hope you doing well! To way right there. 1: in your theme create new layout file in <?xml version="1.0"?> <page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd"> <head> <script src="Magento_Customer::your_custom.js"/> </head> </page>


push your js file in your current theme like:


2: You can create new module and push you code like


<?xml version="1.0"?> <page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd"> <head> <script src="namespace_modulename::your_custom.js"/> </head> </page>

Then create new {your_custom.is} in


  • My current extension is not a theme. Can I do it from the existing extension inside app/code or do I have to create a theme to do this?
    – James
    Feb 25, 2020 at 7:45
  • Sorry I see you mention how to do it from my existing extension on option 2. I will try that!
    – James
    Feb 25, 2020 at 7:46
  • I tried option 2, and whilst I get no errors, I don't see my script running. See my updated question for steps followed. I'd really appreciate it if you could see where I have gone wrong.
    – James
    Feb 25, 2020 at 10:34
  • I have posted a new question to address the problems I am having with this not working; magento.stackexchange.com/questions/305336/…
    – James
    Feb 25, 2020 at 21:03
  • Hi @James, I answer the question pls check
    – xanka
    Feb 26, 2020 at 2:07

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