addEventListener ( "click", function ( ), "*" ) # Work in isolated worldsĬontent scripts live in an isolated world, allowing a content script to makes changes to its JavaScript environment without conflicting with the page or additional content scripts.Īn extension may run in a web page with code similar to the example below. src = imgURL Īdditionally, content script can access the following chrome APIs directly:Ĭontent scripts are unable to access other APIs directly. getURL ( "images/myimage.png" ) ĭocument. Code for displaying EXTENSION_DIR/images/myimage.png: They can also access the URL of an extension's file with () and use the result the same as other URLs. # Understand content script capabilitiesĬontent scripts can access Chrome APIs used by their parent extension by exchanging messages with the extension.
By using the standard Document Object Model (DOM), they are able to read details of the web pages the browser visits, make changes to them and pass information to their parent extension. You will find a section on upgrading in the navigation tree at the left, including the Manifest V2 support timeline.Ĭontent scripts are files that run in the context of web pages. Please use Manifest V3 when building new extensions. The Chrome Web Store no longer accepts Manifest V2 extensions.
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