frontend-developer-1

Layout XML in Themes
How can the order of rendered child blocks be influenced both in
containers and in blocks?
The order is influenced through the use of the before and after attributes. You
can specify a block or container’s name or you can use the - (dash) symbol to
denote at the beginning or the end.
HELPFUL LINKS:
• https://devdocs.magento.com/guides/v2.2/frontend-dev-guide/
layouts/xml-instructions.html
3.5 DESCRIBE LAYOUT XML OVERRIDE
TECHNIQUE
How can layout XML be overridden?
It is not ideal to override layout. However, as described by this article, there are
some situations where overriding XML layout is inevitable.
For example, to completely erase the existing Magento product page layout in
our SwiftOtter Flex theme, you would create a new XML file in: app/design/
SwiftOtter/Flex/Magento_Catalog/layout/override/frontend/
catalog_product_view.xml.
Note that these files are placed into the override folder instead of directly
inside the layout folder. XML files that are directly placed in the layout directory
are merged, while XML files that are placed in the appropriate subdirectory of
override replace the original file.
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